Home / 10,691.72-16,039.09-3,296.78

Finding the Fourth Proportional to 10,691.72, 16,039.09 and 3,296.78

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Solution

The fourth proportional to 10,691.72, 16,039.09 and 3,296.78 is: 4,945.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,691.72 : 16,039.09 = 3,296.78 : x
  2. Step 2: Convert to fraction form
    10,691.72/16,039.09 = 3,296.78/x
  3. Step 3: Cross multiply
    10,691.72x = 16,039.09 × 3,296.78
  4. Step 4: Simplify right side
    10,691.72x = 52,877,351.13
  5. Step 5: Solve for x
    x = 52,877,351.13/10,691.72
  6. Step 6: Final answer
    x = 4,945.64

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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.