Home / 39,679.53-54,757.59-21,774.83

Finding the Fourth Proportional to 39,679.53, 54,757.59 and 21,774.83

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Solution

The fourth proportional to 39,679.53, 54,757.59 and 21,774.83 is: 30,049.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,679.53 : 54,757.59 = 21,774.83 : x
  2. Step 2: Convert to fraction form
    39,679.53/54,757.59 = 21,774.83/x
  3. Step 3: Cross multiply
    39,679.53x = 54,757.59 × 21,774.83
  4. Step 4: Simplify right side
    39,679.53x = 1,192,337,104.59
  5. Step 5: Solve for x
    x = 1,192,337,104.59/39,679.53
  6. Step 6: Final answer
    x = 30,049.18

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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.