amber-riley-chris-colfer-saturday-night-glee-ver-ratings.jpgFast National ratings for Tuesday, April 17, 2012

“Glee’s” disco-heavy episode took a ratings hit Tuesday, dropping three tenths of a point in adults 18-49 and about half a million viewers from last week. “The Voice” results show was also down for NBC.

On the other side of the ledger, “The Biggest Loser” ticked up with its contestant-revolt episode. “Dancing With the Stars” also improved a little, but that didn’t help the Tuesday debut of “Private Practice,” which fell well short of the ratings for “Body of Proof” in the time period last week.

CBS averaged 12.4 million viewers and a 7.9 rating/13 share in households to finish on top of the overall rankings. ABC (8.7 million, 5.8/9) came in second. NBC (6.7 million, 4.2/7) beat out FOX (5.4 million, 3.3/5) for third place. The CW finished with a little under a million viewers and a 0.7/1.

FOX and NBC tied for the lead among adults 18-49, each scoring a 2.3 rating. CBS was right behind at 2.2. ABC drew a 1.9 in the demographic, while The CW trailed with a 0.4.

]]> NBC: “The Biggest Loser” (6.9 million, 4.3/7)
FOX: “Glee” (6.2 million, 3.8/6)
ABC: “Last Man Standing” (6.4 million, 4.1/7)/”Cougar Town” (4.6 million, 3.0/5)
The CW: “90210” rerun (762,000, 0.5/1) 18-49 leader: “NCIS” (3.0) 9 p.m. ABC: “Dancing With the Stars” results (13.8 million, 8.9/13)
CBS: “NCIS: Los Angeles” rerun (11.3 million, 7.1/11)
NBC: “The Voice” results (8.75 million, 5.3/8)
FOX: “New Girl” (5.3 million, 3.3/5)/”Raising Hope” season finale (3.9 million, 2.3/4)
The CW: “Ringer” season finale (1.2 million, 0.8/1) 18-49 leader: “The Voice” (3.3) 10 p.m. CBS: “Unforgettable” rerun (8.3 million, 5.5/9)
ABC: “Private Practice” (6.8 million, 4.8/8)
NBC: “Fashion Star” (4.4 million, 3.0/5) 18-49 leader: “Private Practice” (1.7)

Ratings information includes live and same-day DVR viewing. All numbers are preliminary and subject to change. Source: The Nielsen Company. More ratings at Zap2it: Daily, weekly and cable