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Finding the Fourth Proportional to 15,481.68, 21,367.44 and 8,767.68

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Solution

The fourth proportional to 15,481.68, 21,367.44 and 8,767.68 is: 12,100.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,481.68 : 21,367.44 = 8,767.68 : x
  2. Step 2: Convert to fraction form
    15,481.68/21,367.44 = 8,767.68/x
  3. Step 3: Cross multiply
    15,481.68x = 21,367.44 × 8,767.68
  4. Step 4: Simplify right side
    15,481.68x = 187,342,876.34
  5. Step 5: Solve for x
    x = 187,342,876.34/15,481.68
  6. Step 6: Final answer
    x = 12,100.94

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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.