Finding the Fourth Proportional to 18,613,265.20, 27,942,642.60 and 10,531,862.80
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Solution
The fourth proportional to 18,613,265.20, 27,942,642.60 and 10,531,862.80 is: 15,810,663.79
Step by Step Solution
- Step 1: Write the proportion equation
18,613,265.20 : 27,942,642.60 = 10,531,862.80 : x - Step 2: Convert to fraction form
18,613,265.20/27,942,642.60 = 10,531,862.80/x - Step 3: Cross multiply
18,613,265.20x = 27,942,642.60 × 10,531,862.80 - Step 4: Simplify right side
18,613,265.20x = 294,288,078,132,635.31 - Step 5: Solve for x
x = 294,288,078,132,635.31/18,613,265.20 - Step 6: Final answer
x = 15,810,663.79
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.