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Finding the Fourth Proportional to 22,981,987.20, 34,472,980.80 and 18,872,176.80

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Solution

The fourth proportional to 22,981,987.20, 34,472,980.80 and 18,872,176.80 is: 28,308,265.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,981,987.20 : 34,472,980.80 = 18,872,176.80 : x
  2. Step 2: Convert to fraction form
    22,981,987.20/34,472,980.80 = 18,872,176.80/x
  3. Step 3: Cross multiply
    22,981,987.20x = 34,472,980.80 × 18,872,176.80
  4. Step 4: Simplify right side
    22,981,987.20x = 650,580,188,480,605.38
  5. Step 5: Solve for x
    x = 650,580,188,480,605.38/22,981,987.20
  6. Step 6: Final answer
    x = 28,308,265.20

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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.