Home / 8,912.30-13,382.28-8,517.83

Finding the Fourth Proportional to 8,912.30, 13,382.28 and 8,517.83

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Solution

The fourth proportional to 8,912.30, 13,382.28 and 8,517.83 is: 12,789.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,912.30 : 13,382.28 = 8,517.83 : x
  2. Step 2: Convert to fraction form
    8,912.30/13,382.28 = 8,517.83/x
  3. Step 3: Cross multiply
    8,912.30x = 13,382.28 × 8,517.83
  4. Step 4: Simplify right side
    8,912.30x = 113,987,919.14
  5. Step 5: Solve for x
    x = 113,987,919.14/8,912.30
  6. Step 6: Final answer
    x = 12,789.96

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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.