Question : What is the third proportional to 12 and $6 \sqrt{5}$?
Option 1: 12
Option 2: 15
Option 3: 18
Option 4: 21
New: SSC CHSL Tier 2 answer key released | SSC CHSL 2024 Notification PDF
Recommended: How to crack SSC CHSL | SSC CHSL exam guide
Don't Miss: Month-wise Current Affairs | Upcoming government exams
Correct Answer: 15
Solution :
Third proportional to $a, b$ = $\frac{b^2}{a}$
Third proportional to 12 and $6 \sqrt{5}$
= $\frac{(6 \sqrt{5})^2}{12}$
= $\frac{36×5}{12}$
= $15$
Hence, the correct answer is 15.
Related Questions
Know More about
Staff Selection Commission Combined High ...
Result | Eligibility | Application | Admit Card | Answer Key | Preparation Tips | Cutoff
Get Updates Brochure
Your Staff Selection Commission Combined Higher Secondary Level Exam brochure has been successfully mailed to your registered email id “”.
