Home / 20,132.28-27,778.07-12,174.33

Finding the Fourth Proportional to 20,132.28, 27,778.07 and 12,174.33

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Solution

The fourth proportional to 20,132.28, 27,778.07 and 12,174.33 is: 16,797.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,132.28 : 27,778.07 = 12,174.33 : x
  2. Step 2: Convert to fraction form
    20,132.28/27,778.07 = 12,174.33/x
  3. Step 3: Cross multiply
    20,132.28x = 27,778.07 × 12,174.33
  4. Step 4: Simplify right side
    20,132.28x = 338,179,525.55
  5. Step 5: Solve for x
    x = 338,179,525.55/20,132.28
  6. Step 6: Final answer
    x = 16,797.88

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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.