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Finding the Fourth Proportional to 18,154.56, 27,231.86 and 5,674.65

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Solution

The fourth proportional to 18,154.56, 27,231.86 and 5,674.65 is: 8,511.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,154.56 : 27,231.86 = 5,674.65 : x
  2. Step 2: Convert to fraction form
    18,154.56/27,231.86 = 5,674.65/x
  3. Step 3: Cross multiply
    18,154.56x = 27,231.86 × 5,674.65
  4. Step 4: Simplify right side
    18,154.56x = 154,531,143.86
  5. Step 5: Solve for x
    x = 154,531,143.86/18,154.56
  6. Step 6: Final answer
    x = 8,511.98

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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.