Home / 38,381.76-57,489.30-18,618.75

Finding the Fourth Proportional to 38,381.76, 57,489.30 and 18,618.75

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Solution

The fourth proportional to 38,381.76, 57,489.30 and 18,618.75 is: 27,887.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,381.76 : 57,489.30 = 18,618.75 : x
  2. Step 2: Convert to fraction form
    38,381.76/57,489.30 = 18,618.75/x
  3. Step 3: Cross multiply
    38,381.76x = 57,489.30 × 18,618.75
  4. Step 4: Simplify right side
    38,381.76x = 1,070,378,904.38
  5. Step 5: Solve for x
    x = 1,070,378,904.38/38,381.76
  6. Step 6: Final answer
    x = 27,887.70

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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.