Home / 11,936.72-17,921.38-8,229.80

Finding the Fourth Proportional to 11,936.72, 17,921.38 and 8,229.80

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Solution

The fourth proportional to 11,936.72, 17,921.38 and 8,229.80 is: 12,355.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,936.72 : 17,921.38 = 8,229.80 : x
  2. Step 2: Convert to fraction form
    11,936.72/17,921.38 = 8,229.80/x
  3. Step 3: Cross multiply
    11,936.72x = 17,921.38 × 8,229.80
  4. Step 4: Simplify right side
    11,936.72x = 147,489,373.12
  5. Step 5: Solve for x
    x = 147,489,373.12/11,936.72
  6. Step 6: Final answer
    x = 12,355.94

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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.