Home / 39,679.97-54,758.19-21,775.27

Finding the Fourth Proportional to 39,679.97, 54,758.19 and 21,775.27

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Solution

The fourth proportional to 39,679.97, 54,758.19 and 21,775.27 is: 30,049.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,679.97 : 54,758.19 = 21,775.27 : x
  2. Step 2: Convert to fraction form
    39,679.97/54,758.19 = 21,775.27/x
  3. Step 3: Cross multiply
    39,679.97x = 54,758.19 × 21,775.27
  4. Step 4: Simplify right side
    39,679.97x = 1,192,374,263.08
  5. Step 5: Solve for x
    x = 1,192,374,263.08/39,679.97
  6. Step 6: Final answer
    x = 30,049.78

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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.