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Finding the Fourth Proportional to 14,505.92, 20,016.96 and 8,917.12

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Solution

The fourth proportional to 14,505.92, 20,016.96 and 8,917.12 is: 12,304.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,505.92 : 20,016.96 = 8,917.12 : x
  2. Step 2: Convert to fraction form
    14,505.92/20,016.96 = 8,917.12/x
  3. Step 3: Cross multiply
    14,505.92x = 20,016.96 × 8,917.12
  4. Step 4: Simplify right side
    14,505.92x = 178,493,634.36
  5. Step 5: Solve for x
    x = 178,493,634.36/14,505.92
  6. Step 6: Final answer
    x = 12,304.88

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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.