Home / 38,471.28-57,641.22-20,909.76

Finding the Fourth Proportional to 38,471.28, 57,641.22 and 20,909.76

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Solution

The fourth proportional to 38,471.28, 57,641.22 and 20,909.76 is: 31,328.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,471.28 : 57,641.22 = 20,909.76 : x
  2. Step 2: Convert to fraction form
    38,471.28/57,641.22 = 20,909.76/x
  3. Step 3: Cross multiply
    38,471.28x = 57,641.22 × 20,909.76
  4. Step 4: Simplify right side
    38,471.28x = 1,205,264,076.31
  5. Step 5: Solve for x
    x = 1,205,264,076.31/38,471.28
  6. Step 6: Final answer
    x = 31,328.93

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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.