Home / 20,939.01-31,414.38-8,467.79

Finding the Fourth Proportional to 20,939.01, 31,414.38 and 8,467.79

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Solution

The fourth proportional to 20,939.01, 31,414.38 and 8,467.79 is: 12,704.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,939.01 : 31,414.38 = 8,467.79 : x
  2. Step 2: Convert to fraction form
    20,939.01/31,414.38 = 8,467.79/x
  3. Step 3: Cross multiply
    20,939.01x = 31,414.38 × 8,467.79
  4. Step 4: Simplify right side
    20,939.01x = 266,010,372.61
  5. Step 5: Solve for x
    x = 266,010,372.61/20,939.01
  6. Step 6: Final answer
    x = 12,704.06

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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.