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Finding the Fourth Proportional to 21,432.36, 32,197.95 and 20,546.64

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Solution

The fourth proportional to 21,432.36, 32,197.95 and 20,546.64 is: 30,867.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,432.36 : 32,197.95 = 20,546.64 : x
  2. Step 2: Convert to fraction form
    21,432.36/32,197.95 = 20,546.64/x
  3. Step 3: Cross multiply
    21,432.36x = 32,197.95 × 20,546.64
  4. Step 4: Simplify right side
    21,432.36x = 661,559,687.39
  5. Step 5: Solve for x
    x = 661,559,687.39/21,432.36
  6. Step 6: Final answer
    x = 30,867.33

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