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Finding the Fourth Proportional to 30,935.85, 42,691.22 and 16,788.69

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Solution

The fourth proportional to 30,935.85, 42,691.22 and 16,788.69 is: 23,168.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,935.85 : 42,691.22 = 16,788.69 : x
  2. Step 2: Convert to fraction form
    30,935.85/42,691.22 = 16,788.69/x
  3. Step 3: Cross multiply
    30,935.85x = 42,691.22 × 16,788.69
  4. Step 4: Simplify right side
    30,935.85x = 716,729,637.32
  5. Step 5: Solve for x
    x = 716,729,637.32/30,935.85
  6. Step 6: Final answer
    x = 23,168.26

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