Home / 39,422.05-54,402.71-21,517.20

Finding the Fourth Proportional to 39,422.05, 54,402.71 and 21,517.20

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Solution

The fourth proportional to 39,422.05, 54,402.71 and 21,517.20 is: 29,693.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,422.05 : 54,402.71 = 21,517.20 : x
  2. Step 2: Convert to fraction form
    39,422.05/54,402.71 = 21,517.20/x
  3. Step 3: Cross multiply
    39,422.05x = 54,402.71 × 21,517.20
  4. Step 4: Simplify right side
    39,422.05x = 1,170,593,884.03
  5. Step 5: Solve for x
    x = 1,170,593,884.03/39,422.05
  6. Step 6: Final answer
    x = 29,693.89

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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.