Home / 11,721.96-16,168.84-8,183.88

Finding the Fourth Proportional to 11,721.96, 16,168.84 and 8,183.88

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Solution

The fourth proportional to 11,721.96, 16,168.84 and 8,183.88 is: 11,288.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,721.96 : 16,168.84 = 8,183.88 : x
  2. Step 2: Convert to fraction form
    11,721.96/16,168.84 = 8,183.88/x
  3. Step 3: Cross multiply
    11,721.96x = 16,168.84 × 8,183.88
  4. Step 4: Simplify right side
    11,721.96x = 132,323,846.30
  5. Step 5: Solve for x
    x = 132,323,846.30/11,721.96
  6. Step 6: Final answer
    x = 11,288.54

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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.