Home / 11,517.20-17,275.76-4,939.12

Finding the Fourth Proportional to 11,517.20, 17,275.76 and 4,939.12

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Solution

The fourth proportional to 11,517.20, 17,275.76 and 4,939.12 is: 7,408.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,517.20 : 17,275.76 = 4,939.12 : x
  2. Step 2: Convert to fraction form
    11,517.20/17,275.76 = 4,939.12/x
  3. Step 3: Cross multiply
    11,517.20x = 17,275.76 × 4,939.12
  4. Step 4: Simplify right side
    11,517.20x = 85,327,051.73
  5. Step 5: Solve for x
    x = 85,327,051.73/11,517.20
  6. Step 6: Final answer
    x = 7,408.66

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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.