Home / 20,512.38-30,768.60-15,839.22

Finding the Fourth Proportional to 20,512.38, 30,768.60 and 15,839.22

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Solution

The fourth proportional to 20,512.38, 30,768.60 and 15,839.22 is: 23,758.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,512.38 : 30,768.60 = 15,839.22 : x
  2. Step 2: Convert to fraction form
    20,512.38/30,768.60 = 15,839.22/x
  3. Step 3: Cross multiply
    20,512.38x = 30,768.60 × 15,839.22
  4. Step 4: Simplify right side
    20,512.38x = 487,350,624.49
  5. Step 5: Solve for x
    x = 487,350,624.49/20,512.38
  6. Step 6: Final answer
    x = 23,758.85

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.