Home / 13,517.48-20,278-5,086.76

Finding the Fourth Proportional to 13,517.48, 20,278 and 5,086.76

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Solution

The fourth proportional to 13,517.48, 20,278 and 5,086.76 is: 7,630.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,517.48 : 20,278 = 5,086.76 : x
  2. Step 2: Convert to fraction form
    13,517.48/20,278 = 5,086.76/x
  3. Step 3: Cross multiply
    13,517.48x = 20,278 × 5,086.76
  4. Step 4: Simplify right side
    13,517.48x = 103,149,319.28
  5. Step 5: Solve for x
    x = 103,149,319.28/13,517.48
  6. Step 6: Final answer
    x = 7,630.81

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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.