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Finding the Fourth Proportional to 12,320.28, 17,001.63 and 6,731.28

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Solution

The fourth proportional to 12,320.28, 17,001.63 and 6,731.28 is: 9,288.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,320.28 : 17,001.63 = 6,731.28 : x
  2. Step 2: Convert to fraction form
    12,320.28/17,001.63 = 6,731.28/x
  3. Step 3: Cross multiply
    12,320.28x = 17,001.63 × 6,731.28
  4. Step 4: Simplify right side
    12,320.28x = 114,442,731.99
  5. Step 5: Solve for x
    x = 114,442,731.99/12,320.28
  6. Step 6: Final answer
    x = 9,288.97

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