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Finding the Fourth Proportional to 20,197.75, 30,297.63 and 7,718.85

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Solution

The fourth proportional to 20,197.75, 30,297.63 and 7,718.85 is: 11,578.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,197.75 : 30,297.63 = 7,718.85 : x
  2. Step 2: Convert to fraction form
    20,197.75/30,297.63 = 7,718.85/x
  3. Step 3: Cross multiply
    20,197.75x = 30,297.63 × 7,718.85
  4. Step 4: Simplify right side
    20,197.75x = 233,862,861.33
  5. Step 5: Solve for x
    x = 233,862,861.33/20,197.75
  6. Step 6: Final answer
    x = 11,578.66

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