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Finding the Fourth Proportional to 13,773.54, 20,609.28 and 8,229.90

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Solution

The fourth proportional to 13,773.54, 20,609.28 and 8,229.90 is: 12,314.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,773.54 : 20,609.28 = 8,229.90 : x
  2. Step 2: Convert to fraction form
    13,773.54/20,609.28 = 8,229.90/x
  3. Step 3: Cross multiply
    13,773.54x = 20,609.28 × 8,229.90
  4. Step 4: Simplify right side
    13,773.54x = 169,612,313.47
  5. Step 5: Solve for x
    x = 169,612,313.47/13,773.54
  6. Step 6: Final answer
    x = 12,314.36

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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.