The fourth proportional of the numbers 8, 12 and 14 is:
Show answer & explanation
Correct answer: D
Explanation
The correct answer is option 4 i.e. 21.
we have a = 8, b = 12, and c = 14.
We need to find x.
In proportion, the fourth proportional x to the numbers a, b and c is found using the equation:
a/b = c/x
Put the values into the proportion:
8/12 = 14/x
8 × x = 12 × 14
8x = 168
x = 168/8
x = 21