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Finding the Fourth Proportional to 12,361.44, 18,545.04 and 7,171.68

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Solution

The fourth proportional to 12,361.44, 18,545.04 and 7,171.68 is: 10,759.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,361.44 : 18,545.04 = 7,171.68 : x
  2. Step 2: Convert to fraction form
    12,361.44/18,545.04 = 7,171.68/x
  3. Step 3: Cross multiply
    12,361.44x = 18,545.04 × 7,171.68
  4. Step 4: Simplify right side
    12,361.44x = 132,999,092.47
  5. Step 5: Solve for x
    x = 132,999,092.47/12,361.44
  6. Step 6: Final answer
    x = 10,759.19

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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.