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Finding the Fourth Proportional to 11,585.50, 15,975.96 and 9,912.44

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Solution

The fourth proportional to 11,585.50, 15,975.96 and 9,912.44 is: 13,668.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,585.50 : 15,975.96 = 9,912.44 : x
  2. Step 2: Convert to fraction form
    11,585.50/15,975.96 = 9,912.44/x
  3. Step 3: Cross multiply
    11,585.50x = 15,975.96 × 9,912.44
  4. Step 4: Simplify right side
    11,585.50x = 158,360,744.94
  5. Step 5: Solve for x
    x = 158,360,744.94/11,585.50
  6. Step 6: Final answer
    x = 13,668.87

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