Home / 11,517.72-15,908.78-8,896.92

Finding the Fourth Proportional to 11,517.72, 15,908.78 and 8,896.92

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Solution

The fourth proportional to 11,517.72, 15,908.78 and 8,896.92 is: 12,288.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,517.72 : 15,908.78 = 8,896.92 : x
  2. Step 2: Convert to fraction form
    11,517.72/15,908.78 = 8,896.92/x
  3. Step 3: Cross multiply
    11,517.72x = 15,908.78 × 8,896.92
  4. Step 4: Simplify right side
    11,517.72x = 141,539,142.96
  5. Step 5: Solve for x
    x = 141,539,142.96/11,517.72
  6. Step 6: Final answer
    x = 12,288.82

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Double 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.