Answer :
Each number is 1.5 times the previous one.
8 x 1.5 = 12
12 x 1.5 = 18
18 x 1.5 = 27
The next number after 27 is (1.5 x 27) = 40.5
8 x 1.5 = 12
12 x 1.5 = 18
18 x 1.5 = 27
The next number after 27 is (1.5 x 27) = 40.5
