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Finding the Fourth Proportional to 12,092.10, 18,138.15 and 11,217.30

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Solution

The fourth proportional to 12,092.10, 18,138.15 and 11,217.30 is: 16,825.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,092.10 : 18,138.15 = 11,217.30 : x
  2. Step 2: Convert to fraction form
    12,092.10/18,138.15 = 11,217.30/x
  3. Step 3: Cross multiply
    12,092.10x = 18,138.15 × 11,217.30
  4. Step 4: Simplify right side
    12,092.10x = 203,461,070.00
  5. Step 5: Solve for x
    x = 203,461,070.00/12,092.10
  6. Step 6: Final answer
    x = 16,825.95

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