Question

Find the fourth proportional of 9, 36 and 11.

• A. 11
• B. 22
• C. 33
• D. 44

Answer 1

Answer:

D. 44

Solution: Given: Numbers = 9, 36 and 11 Formula used: If four quantities/numbers a, b, c, d are in proportion, then d is called as fourth proportional a ∶ b ∶ ∶ c ∶ d Calculation: Let the fourth proportional be D According to the question 9 ∶ 36 ∶ ∶ 11 ∶ D ⇒ (1/4) = (11/D) ⇒ D = 11 × 4 = 44 ∴ The fourth proportional is 44.