Home / 12,382.05-17,091.13-8,354.73

Finding the Fourth Proportional to 12,382.05, 17,091.13 and 8,354.73

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Solution

The fourth proportional to 12,382.05, 17,091.13 and 8,354.73 is: 11,532.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,382.05 : 17,091.13 = 8,354.73 : x
  2. Step 2: Convert to fraction form
    12,382.05/17,091.13 = 8,354.73/x
  3. Step 3: Cross multiply
    12,382.05x = 17,091.13 × 8,354.73
  4. Step 4: Simplify right side
    12,382.05x = 142,791,776.54
  5. Step 5: Solve for x
    x = 142,791,776.54/12,382.05
  6. Step 6: Final answer
    x = 11,532.16

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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.