Home / 11,939.28-17,911.68-6,679.56

Finding the Fourth Proportional to 11,939.28, 17,911.68 and 6,679.56

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Solution

The fourth proportional to 11,939.28, 17,911.68 and 6,679.56 is: 10,020.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,939.28 : 17,911.68 = 6,679.56 : x
  2. Step 2: Convert to fraction form
    11,939.28/17,911.68 = 6,679.56/x
  3. Step 3: Cross multiply
    11,939.28x = 17,911.68 × 6,679.56
  4. Step 4: Simplify right side
    11,939.28x = 119,642,141.26
  5. Step 5: Solve for x
    x = 119,642,141.26/11,939.28
  6. Step 6: Final answer
    x = 10,020.88

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1.5x scale

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.