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Finding the Fourth Proportional to 14,659.28, 20,229.72 and 8,371.28

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Solution

The fourth proportional to 14,659.28, 20,229.72 and 8,371.28 is: 11,552.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,659.28 : 20,229.72 = 8,371.28 : x
  2. Step 2: Convert to fraction form
    14,659.28/20,229.72 = 8,371.28/x
  3. Step 3: Cross multiply
    14,659.28x = 20,229.72 × 8,371.28
  4. Step 4: Simplify right side
    14,659.28x = 169,348,650.44
  5. Step 5: Solve for x
    x = 169,348,650.44/14,659.28
  6. Step 6: Final answer
    x = 11,552.32

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.