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Finding the Fourth Proportional to 38,649.80, 57,977.40 and 15,273.20

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Solution

The fourth proportional to 38,649.80, 57,977.40 and 15,273.20 is: 22,910.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,649.80 : 57,977.40 = 15,273.20 : x
  2. Step 2: Convert to fraction form
    38,649.80/57,977.40 = 15,273.20/x
  3. Step 3: Cross multiply
    38,649.80x = 57,977.40 × 15,273.20
  4. Step 4: Simplify right side
    38,649.80x = 885,500,425.68
  5. Step 5: Solve for x
    x = 885,500,425.68/38,649.80
  6. Step 6: Final answer
    x = 22,910.87

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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.