Home / 13,517.28-20,278.09-5,727.24

Finding the Fourth Proportional to 13,517.28, 20,278.09 and 5,727.24

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Solution

The fourth proportional to 13,517.28, 20,278.09 and 5,727.24 is: 8,591.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,517.28 : 20,278.09 = 5,727.24 : x
  2. Step 2: Convert to fraction form
    13,517.28/20,278.09 = 5,727.24/x
  3. Step 3: Cross multiply
    13,517.28x = 20,278.09 × 5,727.24
  4. Step 4: Simplify right side
    13,517.28x = 116,137,488.17
  5. Step 5: Solve for x
    x = 116,137,488.17/13,517.28
  6. Step 6: Final answer
    x = 8,591.78

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1.5x scale

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.