Question

Find fourth proportional of 19 38 11​

Answer 1

Answer:

30

Step-by-step explanation:

Either we can see like difference in 19 38 is 19

38-19 = 19 or 19+19 = 38

so now 11+19 = 30

Or we can analyse alternate in the series

like 19-8 = 11 so second term - 8 = fourth term

38 - 8 = 30

Hope this helps