Home / 39,191.28-54,084.38-21,286.63

Finding the Fourth Proportional to 39,191.28, 54,084.38 and 21,286.63

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Solution

The fourth proportional to 39,191.28, 54,084.38 and 21,286.63 is: 29,375.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,191.28 : 54,084.38 = 21,286.63 : x
  2. Step 2: Convert to fraction form
    39,191.28/54,084.38 = 21,286.63/x
  3. Step 3: Cross multiply
    39,191.28x = 54,084.38 × 21,286.63
  4. Step 4: Simplify right side
    39,191.28x = 1,151,274,147.01
  5. Step 5: Solve for x
    x = 1,151,274,147.01/39,191.28
  6. Step 6: Final answer
    x = 29,375.78

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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.