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Finding the Fourth Proportional to 12,046.98, 18,061.20 and 6,118.99

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Solution

The fourth proportional to 12,046.98, 18,061.20 and 6,118.99 is: 9,173.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,046.98 : 18,061.20 = 6,118.99 : x
  2. Step 2: Convert to fraction form
    12,046.98/18,061.20 = 6,118.99/x
  3. Step 3: Cross multiply
    12,046.98x = 18,061.20 × 6,118.99
  4. Step 4: Simplify right side
    12,046.98x = 110,516,375.84
  5. Step 5: Solve for x
    x = 110,516,375.84/12,046.98
  6. Step 6: Final answer
    x = 9,173.78

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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.