Home / 39,337.89-54,286.91-21,432.89

Finding the Fourth Proportional to 39,337.89, 54,286.91 and 21,432.89

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Solution

The fourth proportional to 39,337.89, 54,286.91 and 21,432.89 is: 29,577.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,337.89 : 54,286.91 = 21,432.89 : x
  2. Step 2: Convert to fraction form
    39,337.89/54,286.91 = 21,432.89/x
  3. Step 3: Cross multiply
    39,337.89x = 54,286.91 × 21,432.89
  4. Step 4: Simplify right side
    39,337.89x = 1,163,524,991.87
  5. Step 5: Solve for x
    x = 1,163,524,991.87/39,337.89
  6. Step 6: Final answer
    x = 29,577.72

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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.