Finding the Fourth Proportional to 15,640,276.67, 21,575,911.97 and 13,572,389.87
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Solution
The fourth proportional to 15,640,276.67, 21,575,911.97 and 13,572,389.87 is: 18,723,242.26
Step by Step Solution
- Step 1: Write the proportion equation
15,640,276.67 : 21,575,911.97 = 13,572,389.87 : x - Step 2: Convert to fraction form
15,640,276.67/21,575,911.97 = 13,572,389.87/x - Step 3: Cross multiply
15,640,276.67x = 21,575,911.97 × 13,572,389.87 - Step 4: Simplify right side
15,640,276.67x = 292,836,689,057,639.69 - Step 5: Solve for x
x = 292,836,689,057,639.69/15,640,276.67 - Step 6: Final answer
x = 18,723,242.26
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.