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Finding the Fourth Proportional to 18,493.73, 25,514.18 and 11,778.16

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Solution

The fourth proportional to 18,493.73, 25,514.18 and 11,778.16 is: 16,249.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,493.73 : 25,514.18 = 11,778.16 : x
  2. Step 2: Convert to fraction form
    18,493.73/25,514.18 = 11,778.16/x
  3. Step 3: Cross multiply
    18,493.73x = 25,514.18 × 11,778.16
  4. Step 4: Simplify right side
    18,493.73x = 300,510,001.08
  5. Step 5: Solve for x
    x = 300,510,001.08/18,493.73
  6. Step 6: Final answer
    x = 16,249.29

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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.