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Finding the Fourth Proportional to 18,234.48, 25,162.74 and 11,161.56

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Solution

The fourth proportional to 18,234.48, 25,162.74 and 11,161.56 is: 15,402.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,234.48 : 25,162.74 = 11,161.56 : x
  2. Step 2: Convert to fraction form
    18,234.48/25,162.74 = 11,161.56/x
  3. Step 3: Cross multiply
    18,234.48x = 25,162.74 × 11,161.56
  4. Step 4: Simplify right side
    18,234.48x = 280,855,432.27
  5. Step 5: Solve for x
    x = 280,855,432.27/18,234.48
  6. Step 6: Final answer
    x = 15,402.44

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.