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Finding the Fourth Proportional to 18,275,879.70, 27,413,819.55 and 15,406,098.30

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Solution

The fourth proportional to 18,275,879.70, 27,413,819.55 and 15,406,098.30 is: 23,109,147.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,275,879.70 : 27,413,819.55 = 15,406,098.30 : x
  2. Step 2: Convert to fraction form
    18,275,879.70/27,413,819.55 = 15,406,098.30/x
  3. Step 3: Cross multiply
    18,275,879.70x = 27,413,819.55 × 15,406,098.30
  4. Step 4: Simplify right side
    18,275,879.70x = 422,339,998,765,761.81
  5. Step 5: Solve for x
    x = 422,339,998,765,761.81/18,275,879.70
  6. Step 6: Final answer
    x = 23,109,147.45

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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.