Home / 20,132.24-27,785.80-11,747.12

Finding the Fourth Proportional to 20,132.24, 27,785.80 and 11,747.12

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Solution

The fourth proportional to 20,132.24, 27,785.80 and 11,747.12 is: 16,212.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,132.24 : 27,785.80 = 11,747.12 : x
  2. Step 2: Convert to fraction form
    20,132.24/27,785.80 = 11,747.12/x
  3. Step 3: Cross multiply
    20,132.24x = 27,785.80 × 11,747.12
  4. Step 4: Simplify right side
    20,132.24x = 326,403,126.90
  5. Step 5: Solve for x
    x = 326,403,126.90/20,132.24
  6. Step 6: Final answer
    x = 16,212.96

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.