Home / 11,579.18-15,979.12-6,863.54

Finding the Fourth Proportional to 11,579.18, 15,979.12 and 6,863.54

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Solution

The fourth proportional to 11,579.18, 15,979.12 and 6,863.54 is: 9,471.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,579.18 : 15,979.12 = 6,863.54 : x
  2. Step 2: Convert to fraction form
    11,579.18/15,979.12 = 6,863.54/x
  3. Step 3: Cross multiply
    11,579.18x = 15,979.12 × 6,863.54
  4. Step 4: Simplify right side
    11,579.18x = 109,673,329.28
  5. Step 5: Solve for x
    x = 109,673,329.28/11,579.18
  6. Step 6: Final answer
    x = 9,471.60

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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.