Home / 20,451.38-30,660.62-11,561.22

Finding the Fourth Proportional to 20,451.38, 30,660.62 and 11,561.22

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Solution

The fourth proportional to 20,451.38, 30,660.62 and 11,561.22 is: 17,332.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,451.38 : 30,660.62 = 11,561.22 : x
  2. Step 2: Convert to fraction form
    20,451.38/30,660.62 = 11,561.22/x
  3. Step 3: Cross multiply
    20,451.38x = 30,660.62 × 11,561.22
  4. Step 4: Simplify right side
    20,451.38x = 354,474,115.35
  5. Step 5: Solve for x
    x = 354,474,115.35/20,451.38
  6. Step 6: Final answer
    x = 17,332.53

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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.