Home / 39,443.52-54,432.36-21,538.20

Finding the Fourth Proportional to 39,443.52, 54,432.36 and 21,538.20

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Solution

The fourth proportional to 39,443.52, 54,432.36 and 21,538.20 is: 29,722.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,443.52 : 54,432.36 = 21,538.20 : x
  2. Step 2: Convert to fraction form
    39,443.52/54,432.36 = 21,538.20/x
  3. Step 3: Cross multiply
    39,443.52x = 54,432.36 × 21,538.20
  4. Step 4: Simplify right side
    39,443.52x = 1,172,375,056.15
  5. Step 5: Solve for x
    x = 1,172,375,056.15/39,443.52
  6. Step 6: Final answer
    x = 29,722.88

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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.