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Finding the Fourth Proportional to 11,159.91, 15,400.17 and 6,686.15

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Solution

The fourth proportional to 11,159.91, 15,400.17 and 6,686.15 is: 9,226.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,159.91 : 15,400.17 = 6,686.15 : x
  2. Step 2: Convert to fraction form
    11,159.91/15,400.17 = 6,686.15/x
  3. Step 3: Cross multiply
    11,159.91x = 15,400.17 × 6,686.15
  4. Step 4: Simplify right side
    11,159.91x = 102,967,769.64
  5. Step 5: Solve for x
    x = 102,967,769.64/11,159.91
  6. Step 6: Final answer
    x = 9,226.58

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