Home / 39,835.38-54,972.84-21,930.42

Finding the Fourth Proportional to 39,835.38, 54,972.84 and 21,930.42

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Solution

The fourth proportional to 39,835.38, 54,972.84 and 21,930.42 is: 30,263.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,835.38 : 54,972.84 = 21,930.42 : x
  2. Step 2: Convert to fraction form
    39,835.38/54,972.84 = 21,930.42/x
  3. Step 3: Cross multiply
    39,835.38x = 54,972.84 × 21,930.42
  4. Step 4: Simplify right side
    39,835.38x = 1,205,577,469.79
  5. Step 5: Solve for x
    x = 1,205,577,469.79/39,835.38
  6. Step 6: Final answer
    x = 30,263.99

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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.