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Finding the Fourth Proportional to 15,661,508.01, 21,613,028.46 and 8,786,137.68

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Solution

The fourth proportional to 15,661,508.01, 21,613,028.46 and 8,786,137.68 is: 12,124,952.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,661,508.01 : 21,613,028.46 = 8,786,137.68 : x
  2. Step 2: Convert to fraction form
    15,661,508.01/21,613,028.46 = 8,786,137.68/x
  3. Step 3: Cross multiply
    15,661,508.01x = 21,613,028.46 × 8,786,137.68
  4. Step 4: Simplify right side
    15,661,508.01x = 189,895,043,731,318.38
  5. Step 5: Solve for x
    x = 189,895,043,731,318.38/15,661,508.01
  6. Step 6: Final answer
    x = 12,124,952.69

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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.