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Finding the Fourth Proportional to 17,167.20, 25,753.28 and 5,479.20

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Solution

The fourth proportional to 17,167.20, 25,753.28 and 5,479.20 is: 8,219.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,167.20 : 25,753.28 = 5,479.20 : x
  2. Step 2: Convert to fraction form
    17,167.20/25,753.28 = 5,479.20/x
  3. Step 3: Cross multiply
    17,167.20x = 25,753.28 × 5,479.20
  4. Step 4: Simplify right side
    17,167.20x = 141,107,371.78
  5. Step 5: Solve for x
    x = 141,107,371.78/17,167.20
  6. Step 6: Final answer
    x = 8,219.59

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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.