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Finding the Fourth Proportional to 9,995.89, 13,812.65 and 8,665.33

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Solution

The fourth proportional to 9,995.89, 13,812.65 and 8,665.33 is: 11,974.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,995.89 : 13,812.65 = 8,665.33 : x
  2. Step 2: Convert to fraction form
    9,995.89/13,812.65 = 8,665.33/x
  3. Step 3: Cross multiply
    9,995.89x = 13,812.65 × 8,665.33
  4. Step 4: Simplify right side
    9,995.89x = 119,691,170.42
  5. Step 5: Solve for x
    x = 119,691,170.42/9,995.89
  6. Step 6: Final answer
    x = 11,974.04

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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.