Home / 25,419.40-38,134.19-8,780.04

Finding the Fourth Proportional to 25,419.40, 38,134.19 and 8,780.04

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Solution

The fourth proportional to 25,419.40, 38,134.19 and 8,780.04 is: 13,171.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,419.40 : 38,134.19 = 8,780.04 : x
  2. Step 2: Convert to fraction form
    25,419.40/38,134.19 = 8,780.04/x
  3. Step 3: Cross multiply
    25,419.40x = 38,134.19 × 8,780.04
  4. Step 4: Simplify right side
    25,419.40x = 334,819,713.57
  5. Step 5: Solve for x
    x = 334,819,713.57/25,419.40
  6. Step 6: Final answer
    x = 13,171.82

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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.