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Finding the Fourth Proportional to 38,249.28, 57,373.92 and 13,608

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Solution

The fourth proportional to 38,249.28, 57,373.92 and 13,608 is: 20,412

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,249.28 : 57,373.92 = 13,608 : x
  2. Step 2: Convert to fraction form
    38,249.28/57,373.92 = 13,608/x
  3. Step 3: Cross multiply
    38,249.28x = 57,373.92 × 13,608
  4. Step 4: Simplify right side
    38,249.28x = 780,744,303.36
  5. Step 5: Solve for x
    x = 780,744,303.36/38,249.28
  6. Step 6: Final answer
    x = 20,412

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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.