Home / 12,229.29-18,330.15-8,520.28

Finding the Fourth Proportional to 12,229.29, 18,330.15 and 8,520.28

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Solution

The fourth proportional to 12,229.29, 18,330.15 and 8,520.28 is: 12,770.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,229.29 : 18,330.15 = 8,520.28 : x
  2. Step 2: Convert to fraction form
    12,229.29/18,330.15 = 8,520.28/x
  3. Step 3: Cross multiply
    12,229.29x = 18,330.15 × 8,520.28
  4. Step 4: Simplify right side
    12,229.29x = 156,178,010.44
  5. Step 5: Solve for x
    x = 156,178,010.44/12,229.29
  6. Step 6: Final answer
    x = 12,770.82

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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.