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Finding the Fourth Proportional to 17,188.61, 25,786.15 and 12,245.99

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Solution

The fourth proportional to 17,188.61, 25,786.15 and 12,245.99 is: 18,371.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,188.61 : 25,786.15 = 12,245.99 : x
  2. Step 2: Convert to fraction form
    17,188.61/25,786.15 = 12,245.99/x
  3. Step 3: Cross multiply
    17,188.61x = 25,786.15 × 12,245.99
  4. Step 4: Simplify right side
    17,188.61x = 315,776,775.49
  5. Step 5: Solve for x
    x = 315,776,775.49/17,188.61
  6. Step 6: Final answer
    x = 18,371.29

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