Home / 20,422.01-28,177.42-11,919.27

Finding the Fourth Proportional to 20,422.01, 28,177.42 and 11,919.27

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Solution

The fourth proportional to 20,422.01, 28,177.42 and 11,919.27 is: 16,445.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,422.01 : 28,177.42 = 11,919.27 : x
  2. Step 2: Convert to fraction form
    20,422.01/28,177.42 = 11,919.27/x
  3. Step 3: Cross multiply
    20,422.01x = 28,177.42 × 11,919.27
  4. Step 4: Simplify right side
    20,422.01x = 335,854,276.88
  5. Step 5: Solve for x
    x = 335,854,276.88/20,422.01
  6. Step 6: Final answer
    x = 16,445.70

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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.