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Finding the Fourth Proportional to 15,181.79, 22,768.25 and 5,821.11

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Solution

The fourth proportional to 15,181.79, 22,768.25 and 5,821.11 is: 8,729.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,181.79 : 22,768.25 = 5,821.11 : x
  2. Step 2: Convert to fraction form
    15,181.79/22,768.25 = 5,821.11/x
  3. Step 3: Cross multiply
    15,181.79x = 22,768.25 × 5,821.11
  4. Step 4: Simplify right side
    15,181.79x = 132,536,458.65
  5. Step 5: Solve for x
    x = 132,536,458.65/15,181.79
  6. Step 6: Final answer
    x = 8,729.97

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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.