Home / 11,579.38-15,979.68-6,862.76

Finding the Fourth Proportional to 11,579.38, 15,979.68 and 6,862.76

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Solution

The fourth proportional to 11,579.38, 15,979.68 and 6,862.76 is: 9,470.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,579.38 : 15,979.68 = 6,862.76 : x
  2. Step 2: Convert to fraction form
    11,579.38/15,979.68 = 6,862.76/x
  3. Step 3: Cross multiply
    11,579.38x = 15,979.68 × 6,862.76
  4. Step 4: Simplify right side
    11,579.38x = 109,664,708.72
  5. Step 5: Solve for x
    x = 109,664,708.72/11,579.38
  6. Step 6: Final answer
    x = 9,470.69

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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.