Home / 39,540.80-54,565.82-21,635.60

Finding the Fourth Proportional to 39,540.80, 54,565.82 and 21,635.60

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Solution

The fourth proportional to 39,540.80, 54,565.82 and 21,635.60 is: 29,856.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,540.80 : 54,565.82 = 21,635.60 : x
  2. Step 2: Convert to fraction form
    39,540.80/54,565.82 = 21,635.60/x
  3. Step 3: Cross multiply
    39,540.80x = 54,565.82 × 21,635.60
  4. Step 4: Simplify right side
    39,540.80x = 1,180,564,255.19
  5. Step 5: Solve for x
    x = 1,180,564,255.19/39,540.80
  6. Step 6: Final answer
    x = 29,856.86

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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.