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Finding the Fourth Proportional to 18,445.52, 25,451.01 and 11,728.73

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Solution

The fourth proportional to 18,445.52, 25,451.01 and 11,728.73 is: 16,183.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,445.52 : 25,451.01 = 11,728.73 : x
  2. Step 2: Convert to fraction form
    18,445.52/25,451.01 = 11,728.73/x
  3. Step 3: Cross multiply
    18,445.52x = 25,451.01 × 11,728.73
  4. Step 4: Simplify right side
    18,445.52x = 298,508,088.14
  5. Step 5: Solve for x
    x = 298,508,088.14/18,445.52
  6. Step 6: Final answer
    x = 16,183.23

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Half scale
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Double scale
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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.