Home / 39,319.12-54,261.42-21,414.88

Finding the Fourth Proportional to 39,319.12, 54,261.42 and 21,414.88

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Solution

The fourth proportional to 39,319.12, 54,261.42 and 21,414.88 is: 29,553.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,319.12 : 54,261.42 = 21,414.88 : x
  2. Step 2: Convert to fraction form
    39,319.12/54,261.42 = 21,414.88/x
  3. Step 3: Cross multiply
    39,319.12x = 54,261.42 × 21,414.88
  4. Step 4: Simplify right side
    39,319.12x = 1,162,001,797.93
  5. Step 5: Solve for x
    x = 1,162,001,797.93/39,319.12
  6. Step 6: Final answer
    x = 29,553.10

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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.