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Finding the Fourth Proportional to 11,490.27, 15,861.86 and 7,716.07

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Solution

The fourth proportional to 11,490.27, 15,861.86 and 7,716.07 is: 10,651.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,490.27 : 15,861.86 = 7,716.07 : x
  2. Step 2: Convert to fraction form
    11,490.27/15,861.86 = 7,716.07/x
  3. Step 3: Cross multiply
    11,490.27x = 15,861.86 × 7,716.07
  4. Step 4: Simplify right side
    11,490.27x = 122,391,222.09
  5. Step 5: Solve for x
    x = 122,391,222.09/11,490.27
  6. Step 6: Final answer
    x = 10,651.73

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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.