Home / 25,691.85-35,451-15,084.90

Finding the Fourth Proportional to 25,691.85, 35,451 and 15,084.90

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Solution

The fourth proportional to 25,691.85, 35,451 and 15,084.90 is: 20,814.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,691.85 : 35,451 = 15,084.90 : x
  2. Step 2: Convert to fraction form
    25,691.85/35,451 = 15,084.90/x
  3. Step 3: Cross multiply
    25,691.85x = 35,451 × 15,084.90
  4. Step 4: Simplify right side
    25,691.85x = 534,774,789.90
  5. Step 5: Solve for x
    x = 534,774,789.90/25,691.85
  6. Step 6: Final answer
    x = 20,814.96

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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.