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Finding the Fourth Proportional to 10,891.74, 16,324.28 and 7,754.76

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Solution

The fourth proportional to 10,891.74, 16,324.28 and 7,754.76 is: 11,622.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,891.74 : 16,324.28 = 7,754.76 : x
  2. Step 2: Convert to fraction form
    10,891.74/16,324.28 = 7,754.76/x
  3. Step 3: Cross multiply
    10,891.74x = 16,324.28 × 7,754.76
  4. Step 4: Simplify right side
    10,891.74x = 126,590,873.57
  5. Step 5: Solve for x
    x = 126,590,873.57/10,891.74
  6. Step 6: Final answer
    x = 11,622.65

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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.