0
Wiki User
24
36
36 72 66
18
The next number in the series 4, 12, 6, 12, 36, 18, 36
12 : 18 = 2 : 3 (divide both by 6)
The next number in the series 4-12-6-12-36-18-36.. is 108.
(6), 12, 18, 24
-3 0 3 then 6 9 12 15 18 21 and so on ...