Home / 11,715.28-16,167.46-6,679.40

Finding the Fourth Proportional to 11,715.28, 16,167.46 and 6,679.40

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Solution

The fourth proportional to 11,715.28, 16,167.46 and 6,679.40 is: 9,217.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,715.28 : 16,167.46 = 6,679.40 : x
  2. Step 2: Convert to fraction form
    11,715.28/16,167.46 = 6,679.40/x
  3. Step 3: Cross multiply
    11,715.28x = 16,167.46 × 6,679.40
  4. Step 4: Simplify right side
    11,715.28x = 107,988,932.32
  5. Step 5: Solve for x
    x = 107,988,932.32/11,715.28
  6. Step 6: Final answer
    x = 9,217.79

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.