Home / 20,331.62-30,497.07-7,854.38

Finding the Fourth Proportional to 20,331.62, 30,497.07 and 7,854.38

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Solution

The fourth proportional to 20,331.62, 30,497.07 and 7,854.38 is: 11,781.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,331.62 : 30,497.07 = 7,854.38 : x
  2. Step 2: Convert to fraction form
    20,331.62/30,497.07 = 7,854.38/x
  3. Step 3: Cross multiply
    20,331.62x = 30,497.07 × 7,854.38
  4. Step 4: Simplify right side
    20,331.62x = 239,535,576.67
  5. Step 5: Solve for x
    x = 239,535,576.67/20,331.62
  6. Step 6: Final answer
    x = 11,781.43

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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.