Home / 21,936.42-30,272.13-12,504.78

Finding the Fourth Proportional to 21,936.42, 30,272.13 and 12,504.78

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Solution

The fourth proportional to 21,936.42, 30,272.13 and 12,504.78 is: 17,256.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,936.42 : 30,272.13 = 12,504.78 : x
  2. Step 2: Convert to fraction form
    21,936.42/30,272.13 = 12,504.78/x
  3. Step 3: Cross multiply
    21,936.42x = 30,272.13 × 12,504.78
  4. Step 4: Simplify right side
    21,936.42x = 378,546,325.78
  5. Step 5: Solve for x
    x = 378,546,325.78/21,936.42
  6. Step 6: Final answer
    x = 17,256.52

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