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Finding the Fourth Proportional to 11,716.74, 16,169.11 and 6,411.56

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Solution

The fourth proportional to 11,716.74, 16,169.11 and 6,411.56 is: 8,847.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,716.74 : 16,169.11 = 6,411.56 : x
  2. Step 2: Convert to fraction form
    11,716.74/16,169.11 = 6,411.56/x
  3. Step 3: Cross multiply
    11,716.74x = 16,169.11 × 6,411.56
  4. Step 4: Simplify right side
    11,716.74x = 103,669,113.02
  5. Step 5: Solve for x
    x = 103,669,113.02/11,716.74
  6. Step 6: Final answer
    x = 8,847.95

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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.