Home / 39,445.20-54,432.78-21,540.18

Finding the Fourth Proportional to 39,445.20, 54,432.78 and 21,540.18

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Solution

The fourth proportional to 39,445.20, 54,432.78 and 21,540.18 is: 29,724.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,445.20 : 54,432.78 = 21,540.18 : x
  2. Step 2: Convert to fraction form
    39,445.20/54,432.78 = 21,540.18/x
  3. Step 3: Cross multiply
    39,445.20x = 54,432.78 × 21,540.18
  4. Step 4: Simplify right side
    39,445.20x = 1,172,491,879.10
  5. Step 5: Solve for x
    x = 1,172,491,879.10/39,445.20
  6. Step 6: Final answer
    x = 29,724.58

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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.