Home / 11,310.08-15,620.11-8,821.76

Finding the Fourth Proportional to 11,310.08, 15,620.11 and 8,821.76

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Solution

The fourth proportional to 11,310.08, 15,620.11 and 8,821.76 is: 12,183.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,310.08 : 15,620.11 = 8,821.76 : x
  2. Step 2: Convert to fraction form
    11,310.08/15,620.11 = 8,821.76/x
  3. Step 3: Cross multiply
    11,310.08x = 15,620.11 × 8,821.76
  4. Step 4: Simplify right side
    11,310.08x = 137,796,761.44
  5. Step 5: Solve for x
    x = 137,796,761.44/11,310.08
  6. Step 6: Final answer
    x = 12,183.54

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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.