Home / 15,511,021.38-21,399,668.91-8,981,086.50

Finding the Fourth Proportional to 15,511,021.38, 21,399,668.91 and 8,981,086.50

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Solution

The fourth proportional to 15,511,021.38, 21,399,668.91 and 8,981,086.50 is: 12,390,691.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,511,021.38 : 21,399,668.91 = 8,981,086.50 : x
  2. Step 2: Convert to fraction form
    15,511,021.38/21,399,668.91 = 8,981,086.50/x
  3. Step 3: Cross multiply
    15,511,021.38x = 21,399,668.91 × 8,981,086.50
  4. Step 4: Simplify right side
    15,511,021.38x = 192,192,277,552,070.72
  5. Step 5: Solve for x
    x = 192,192,277,552,070.72/15,511,021.38
  6. Step 6: Final answer
    x = 12,390,691.29

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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.