Home / 10,979.75-16,469.67-2,659.75

Finding the Fourth Proportional to 10,979.75, 16,469.67 and 2,659.75

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Solution

The fourth proportional to 10,979.75, 16,469.67 and 2,659.75 is: 3,989.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,979.75 : 16,469.67 = 2,659.75 : x
  2. Step 2: Convert to fraction form
    10,979.75/16,469.67 = 2,659.75/x
  3. Step 3: Cross multiply
    10,979.75x = 16,469.67 × 2,659.75
  4. Step 4: Simplify right side
    10,979.75x = 43,805,204.78
  5. Step 5: Solve for x
    x = 43,805,204.78/10,979.75
  6. Step 6: Final answer
    x = 3,989.64

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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.