Home / 20,665.38-30,997.26-8,814.27

Finding the Fourth Proportional to 20,665.38, 30,997.26 and 8,814.27

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Solution

The fourth proportional to 20,665.38, 30,997.26 and 8,814.27 is: 13,221.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,665.38 : 30,997.26 = 8,814.27 : x
  2. Step 2: Convert to fraction form
    20,665.38/30,997.26 = 8,814.27/x
  3. Step 3: Cross multiply
    20,665.38x = 30,997.26 × 8,814.27
  4. Step 4: Simplify right side
    20,665.38x = 273,218,218.90
  5. Step 5: Solve for x
    x = 273,218,218.90/20,665.38
  6. Step 6: Final answer
    x = 13,221.06

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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.