Home / 11,358.15-15,674.70-6,879.38

Finding the Fourth Proportional to 11,358.15, 15,674.70 and 6,879.38

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Solution

The fourth proportional to 11,358.15, 15,674.70 and 6,879.38 is: 9,493.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,358.15 : 15,674.70 = 6,879.38 : x
  2. Step 2: Convert to fraction form
    11,358.15/15,674.70 = 6,879.38/x
  3. Step 3: Cross multiply
    11,358.15x = 15,674.70 × 6,879.38
  4. Step 4: Simplify right side
    11,358.15x = 107,832,139.31
  5. Step 5: Solve for x
    x = 107,832,139.31/11,358.15
  6. Step 6: Final answer
    x = 9,493.81

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Half scale
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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.