Home / 20,684,008.78-28,543,010.97-11,857,132.09

Finding the Fourth Proportional to 20,684,008.78, 28,543,010.97 and 11,857,132.09

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Solution

The fourth proportional to 20,684,008.78, 28,543,010.97 and 11,857,132.09 is: 16,362,314.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,684,008.78 : 28,543,010.97 = 11,857,132.09 : x
  2. Step 2: Convert to fraction form
    20,684,008.78/28,543,010.97 = 11,857,132.09/x
  3. Step 3: Cross multiply
    20,684,008.78x = 28,543,010.97 × 11,857,132.09
  4. Step 4: Simplify right side
    20,684,008.78x = 338,438,251,246,251.50
  5. Step 5: Solve for x
    x = 338,438,251,246,251.50/20,684,008.78
  6. Step 6: Final answer
    x = 16,362,314.23

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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.