Home / 39,739.20-54,839.82-21,589.84

Finding the Fourth Proportional to 39,739.20, 54,839.82 and 21,589.84

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Solution

The fourth proportional to 39,739.20, 54,839.82 and 21,589.84 is: 29,793.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,739.20 : 54,839.82 = 21,589.84 : x
  2. Step 2: Convert to fraction form
    39,739.20/54,839.82 = 21,589.84/x
  3. Step 3: Cross multiply
    39,739.20x = 54,839.82 × 21,589.84
  4. Step 4: Simplify right side
    39,739.20x = 1,183,982,557.28
  5. Step 5: Solve for x
    x = 1,183,982,557.28/39,739.20
  6. Step 6: Final answer
    x = 29,793.82

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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.