Home / 15,531.60-23,276.28-8,120.88

Finding the Fourth Proportional to 15,531.60, 23,276.28 and 8,120.88

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Solution

The fourth proportional to 15,531.60, 23,276.28 and 8,120.88 is: 12,170.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,531.60 : 23,276.28 = 8,120.88 : x
  2. Step 2: Convert to fraction form
    15,531.60/23,276.28 = 8,120.88/x
  3. Step 3: Cross multiply
    15,531.60x = 23,276.28 × 8,120.88
  4. Step 4: Simplify right side
    15,531.60x = 189,023,876.73
  5. Step 5: Solve for x
    x = 189,023,876.73/15,531.60
  6. Step 6: Final answer
    x = 12,170.28

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.