Finding the Fourth Proportional to 28,447,442.57, 39,257,590.43 and 15,394,702.12
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Solution
The fourth proportional to 28,447,442.57, 39,257,590.43 and 15,394,702.12 is: 21,244,753.69
Step by Step Solution
- Step 1: Write the proportion equation
28,447,442.57 : 39,257,590.43 = 15,394,702.12 : x - Step 2: Convert to fraction form
28,447,442.57/39,257,590.43 = 15,394,702.12/x - Step 3: Cross multiply
28,447,442.57x = 39,257,590.43 × 15,394,702.12 - Step 4: Simplify right side
28,447,442.57x = 604,358,910,618,812.62 - Step 5: Solve for x
x = 604,358,910,618,812.62/28,447,442.57 - Step 6: Final answer
x = 21,244,753.69
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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.