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Finding the Fourth Proportional to 30,805.99, 42,512.11 and 16,658.80

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Solution

The fourth proportional to 30,805.99, 42,512.11 and 16,658.80 is: 22,989.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,805.99 : 42,512.11 = 16,658.80 : x
  2. Step 2: Convert to fraction form
    30,805.99/42,512.11 = 16,658.80/x
  3. Step 3: Cross multiply
    30,805.99x = 42,512.11 × 16,658.80
  4. Step 4: Simplify right side
    30,805.99x = 708,200,738.07
  5. Step 5: Solve for x
    x = 708,200,738.07/30,805.99
  6. Step 6: Final answer
    x = 22,989.06

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