Home / 20,422.44-28,185.26-11,472.80

Finding the Fourth Proportional to 20,422.44, 28,185.26 and 11,472.80

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Solution

The fourth proportional to 20,422.44, 28,185.26 and 11,472.80 is: 15,833.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,422.44 : 28,185.26 = 11,472.80 : x
  2. Step 2: Convert to fraction form
    20,422.44/28,185.26 = 11,472.80/x
  3. Step 3: Cross multiply
    20,422.44x = 28,185.26 × 11,472.80
  4. Step 4: Simplify right side
    20,422.44x = 323,363,652.64
  5. Step 5: Solve for x
    x = 323,363,652.64/20,422.44
  6. Step 6: Final answer
    x = 15,833.74

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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.