Finding the Fourth Proportional to 10,215,139.92, 15,284,860.80 and 8,187,233.28
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Solution
The fourth proportional to 10,215,139.92, 15,284,860.80 and 8,187,233.28 is: 12,250,514.63
Step by Step Solution
- Step 1: Write the proportion equation
10,215,139.92 : 15,284,860.80 = 8,187,233.28 : x - Step 2: Convert to fraction form
10,215,139.92/15,284,860.80 = 8,187,233.28/x - Step 3: Cross multiply
10,215,139.92x = 15,284,860.80 × 8,187,233.28 - Step 4: Simplify right side
10,215,139.92x = 125,140,721,021,927.44 - Step 5: Solve for x
x = 125,140,721,021,927.44/10,215,139.92 - Step 6: Final answer
x = 12,250,514.63
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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.