Question

19) Find the fourth proportional to 9, 12, 18.​

Answer 1

Solution:

» 3 (3) = 9

» 3 (4) = 12 ... diff by 1

» 3 (6) = 18 ... diff by 2

» 3 (9) = 27 ... should diff by 3

Answer 2

the fourth proportional is 27

Step-by-step explanation:

table of 3