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Finding the Fourth Proportional to 11,687.96, 17,531.62 and 3,896.92

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Solution

The fourth proportional to 11,687.96, 17,531.62 and 3,896.92 is: 5,845.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,687.96 : 17,531.62 = 3,896.92 : x
  2. Step 2: Convert to fraction form
    11,687.96/17,531.62 = 3,896.92/x
  3. Step 3: Cross multiply
    11,687.96x = 17,531.62 × 3,896.92
  4. Step 4: Simplify right side
    11,687.96x = 68,319,320.61
  5. Step 5: Solve for x
    x = 68,319,320.61/11,687.96
  6. Step 6: Final answer
    x = 5,845.27

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.