Home / 11,321.69-16,982.87-5,399.21

Finding the Fourth Proportional to 11,321.69, 16,982.87 and 5,399.21

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Solution

The fourth proportional to 11,321.69, 16,982.87 and 5,399.21 is: 8,098.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,321.69 : 16,982.87 = 5,399.21 : x
  2. Step 2: Convert to fraction form
    11,321.69/16,982.87 = 5,399.21/x
  3. Step 3: Cross multiply
    11,321.69x = 16,982.87 × 5,399.21
  4. Step 4: Simplify right side
    11,321.69x = 91,694,096.99
  5. Step 5: Solve for x
    x = 91,694,096.99/11,321.69
  6. Step 6: Final answer
    x = 8,098.98

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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.