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Finding the Fourth Proportional to 13,650.57, 20,490.17 and 12,100.50

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Solution

The fourth proportional to 13,650.57, 20,490.17 and 12,100.50 is: 18,163.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,650.57 : 20,490.17 = 12,100.50 : x
  2. Step 2: Convert to fraction form
    13,650.57/20,490.17 = 12,100.50/x
  3. Step 3: Cross multiply
    13,650.57x = 20,490.17 × 12,100.50
  4. Step 4: Simplify right side
    13,650.57x = 247,941,241.58
  5. Step 5: Solve for x
    x = 247,941,241.58/13,650.57
  6. Step 6: Final answer
    x = 18,163.44

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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.