Home / 18,691.06-28,040.76-8,162.80

Finding the Fourth Proportional to 18,691.06, 28,040.76 and 8,162.80

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Solution

The fourth proportional to 18,691.06, 28,040.76 and 8,162.80 is: 12,246.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,691.06 : 28,040.76 = 8,162.80 : x
  2. Step 2: Convert to fraction form
    18,691.06/28,040.76 = 8,162.80/x
  3. Step 3: Cross multiply
    18,691.06x = 28,040.76 × 8,162.80
  4. Step 4: Simplify right side
    18,691.06x = 228,891,115.73
  5. Step 5: Solve for x
    x = 228,891,115.73/18,691.06
  6. Step 6: Final answer
    x = 12,246.02

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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.