Home / 11,321.72-16,982.78-3,926.44

Finding the Fourth Proportional to 11,321.72, 16,982.78 and 3,926.44

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Solution

The fourth proportional to 11,321.72, 16,982.78 and 3,926.44 is: 5,889.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,321.72 : 16,982.78 = 3,926.44 : x
  2. Step 2: Convert to fraction form
    11,321.72/16,982.78 = 3,926.44/x
  3. Step 3: Cross multiply
    11,321.72x = 16,982.78 × 3,926.44
  4. Step 4: Simplify right side
    11,321.72x = 66,681,866.70
  5. Step 5: Solve for x
    x = 66,681,866.70/11,321.72
  6. Step 6: Final answer
    x = 5,889.73

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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.