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Finding the Fourth Proportional to 11,449.92, 15,785.77 and 8,260.55

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Solution

The fourth proportional to 11,449.92, 15,785.77 and 8,260.55 is: 11,388.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,449.92 : 15,785.77 = 8,260.55 : x
  2. Step 2: Convert to fraction form
    11,449.92/15,785.77 = 8,260.55/x
  3. Step 3: Cross multiply
    11,449.92x = 15,785.77 × 8,260.55
  4. Step 4: Simplify right side
    11,449.92x = 130,399,142.37
  5. Step 5: Solve for x
    x = 130,399,142.37/11,449.92
  6. Step 6: Final answer
    x = 11,388.65

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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.