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Finding the Fourth Proportional to 18,505.64, 27,767.58 and 8,645.62

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Solution

The fourth proportional to 18,505.64, 27,767.58 and 8,645.62 is: 12,972.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,505.64 : 27,767.58 = 8,645.62 : x
  2. Step 2: Convert to fraction form
    18,505.64/27,767.58 = 8,645.62/x
  3. Step 3: Cross multiply
    18,505.64x = 27,767.58 × 8,645.62
  4. Step 4: Simplify right side
    18,505.64x = 240,067,945.00
  5. Step 5: Solve for x
    x = 240,067,945.00/18,505.64
  6. Step 6: Final answer
    x = 12,972.69

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