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Finding the Fourth Proportional to 12,259.70, 18,375.15 and 5,671.97

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Solution

The fourth proportional to 12,259.70, 18,375.15 and 5,671.97 is: 8,501.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,259.70 : 18,375.15 = 5,671.97 : x
  2. Step 2: Convert to fraction form
    12,259.70/18,375.15 = 5,671.97/x
  3. Step 3: Cross multiply
    12,259.70x = 18,375.15 × 5,671.97
  4. Step 4: Simplify right side
    12,259.70x = 104,223,299.55
  5. Step 5: Solve for x
    x = 104,223,299.55/12,259.70
  6. Step 6: Final answer
    x = 8,501.29

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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.