Finding the Fourth Proportional to 28,921,385.13, 39,912,246 and 15,868,640.58
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Solution
The fourth proportional to 28,921,385.13, 39,912,246 and 15,868,640.58 is: 21,899,127.02
Step by Step Solution
- Step 1: Write the proportion equation
28,921,385.13 : 39,912,246 = 15,868,640.58 : x - Step 2: Convert to fraction form
28,921,385.13/39,912,246 = 15,868,640.58/x - Step 3: Cross multiply
28,921,385.13x = 39,912,246 × 15,868,640.58 - Step 4: Simplify right side
28,921,385.13x = 633,353,086,514,542.62 - Step 5: Solve for x
x = 633,353,086,514,542.62/28,921,385.13 - Step 6: Final answer
x = 21,899,127.02
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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.