Home / 20,092-27,726.19-11,139.66

Finding the Fourth Proportional to 20,092, 27,726.19 and 11,139.66

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Solution

The fourth proportional to 20,092, 27,726.19 and 11,139.66 is: 15,372.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,092 : 27,726.19 = 11,139.66 : x
  2. Step 2: Convert to fraction form
    20,092/27,726.19 = 11,139.66/x
  3. Step 3: Cross multiply
    20,092x = 27,726.19 × 11,139.66
  4. Step 4: Simplify right side
    20,092x = 308,860,329.70
  5. Step 5: Solve for x
    x = 308,860,329.70/20,092
  6. Step 6: Final answer
    x = 15,372.30

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Double scale
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1.5x scale

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.