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Finding the Fourth Proportional to 18,099.86, 27,157.71 and 8,240.18

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Solution

The fourth proportional to 18,099.86, 27,157.71 and 8,240.18 is: 12,363.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,099.86 : 27,157.71 = 8,240.18 : x
  2. Step 2: Convert to fraction form
    18,099.86/27,157.71 = 8,240.18/x
  3. Step 3: Cross multiply
    18,099.86x = 27,157.71 × 8,240.18
  4. Step 4: Simplify right side
    18,099.86x = 223,784,418.79
  5. Step 5: Solve for x
    x = 223,784,418.79/18,099.86
  6. Step 6: Final answer
    x = 12,363.88

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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.