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Finding the Fourth Proportional to 38,635.80, 57,958.02 and 12,331.32

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Solution

The fourth proportional to 38,635.80, 57,958.02 and 12,331.32 is: 18,498.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,635.80 : 57,958.02 = 12,331.32 : x
  2. Step 2: Convert to fraction form
    38,635.80/57,958.02 = 12,331.32/x
  3. Step 3: Cross multiply
    38,635.80x = 57,958.02 × 12,331.32
  4. Step 4: Simplify right side
    38,635.80x = 714,698,891.19
  5. Step 5: Solve for x
    x = 714,698,891.19/38,635.80
  6. Step 6: Final answer
    x = 18,498.36

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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.