Home / 20,422.10-28,180.52-11,467.88

Finding the Fourth Proportional to 20,422.10, 28,180.52 and 11,467.88

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Solution

The fourth proportional to 20,422.10, 28,180.52 and 11,467.88 is: 15,824.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,422.10 : 28,180.52 = 11,467.88 : x
  2. Step 2: Convert to fraction form
    20,422.10/28,180.52 = 11,467.88/x
  3. Step 3: Cross multiply
    20,422.10x = 28,180.52 × 11,467.88
  4. Step 4: Simplify right side
    20,422.10x = 323,170,821.70
  5. Step 5: Solve for x
    x = 323,170,821.70/20,422.10
  6. Step 6: Final answer
    x = 15,824.56

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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.