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Finding the Fourth Proportional to 12,361.91, 18,542.70 and 3,002

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Solution

The fourth proportional to 12,361.91, 18,542.70 and 3,002 is: 4,502.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,361.91 : 18,542.70 = 3,002 : x
  2. Step 2: Convert to fraction form
    12,361.91/18,542.70 = 3,002/x
  3. Step 3: Cross multiply
    12,361.91x = 18,542.70 × 3,002
  4. Step 4: Simplify right side
    12,361.91x = 55,665,185.40
  5. Step 5: Solve for x
    x = 55,665,185.40/12,361.91
  6. Step 6: Final answer
    x = 4,502.96

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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.