Home / 11,156.68-16,708.64-9,687.85

Finding the Fourth Proportional to 11,156.68, 16,708.64 and 9,687.85

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Solution

The fourth proportional to 11,156.68, 16,708.64 and 9,687.85 is: 14,508.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,156.68 : 16,708.64 = 9,687.85 : x
  2. Step 2: Convert to fraction form
    11,156.68/16,708.64 = 9,687.85/x
  3. Step 3: Cross multiply
    11,156.68x = 16,708.64 × 9,687.85
  4. Step 4: Simplify right side
    11,156.68x = 161,870,749.58
  5. Step 5: Solve for x
    x = 161,870,749.58/11,156.68
  6. Step 6: Final answer
    x = 14,508.86

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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.