Home / 10,981.28-16,469.68-3,961.08

Finding the Fourth Proportional to 10,981.28, 16,469.68 and 3,961.08

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Solution

The fourth proportional to 10,981.28, 16,469.68 and 3,961.08 is: 5,940.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,981.28 : 16,469.68 = 3,961.08 : x
  2. Step 2: Convert to fraction form
    10,981.28/16,469.68 = 3,961.08/x
  3. Step 3: Cross multiply
    10,981.28x = 16,469.68 × 3,961.08
  4. Step 4: Simplify right side
    10,981.28x = 65,237,720.05
  5. Step 5: Solve for x
    x = 65,237,720.05/10,981.28
  6. Step 6: Final answer
    x = 5,940.81

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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.