Home / 20,386,081.50-28,132,796.56-11,218,724.24

Finding the Fourth Proportional to 20,386,081.50, 28,132,796.56 and 11,218,724.24

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Solution

The fourth proportional to 20,386,081.50, 28,132,796.56 and 11,218,724.24 is: 15,481,841.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,386,081.50 : 28,132,796.56 = 11,218,724.24 : x
  2. Step 2: Convert to fraction form
    20,386,081.50/28,132,796.56 = 11,218,724.24/x
  3. Step 3: Cross multiply
    20,386,081.50x = 28,132,796.56 × 11,218,724.24
  4. Step 4: Simplify right side
    20,386,081.50x = 315,614,086,706,660.62
  5. Step 5: Solve for x
    x = 315,614,086,706,660.62/20,386,081.50
  6. Step 6: Final answer
    x = 15,481,841.70

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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.