Home / 21,816.78-30,108.33-12,869.52

Finding the Fourth Proportional to 21,816.78, 30,108.33 and 12,869.52

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Solution

The fourth proportional to 21,816.78, 30,108.33 and 12,869.52 is: 17,760.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,816.78 : 30,108.33 = 12,869.52 : x
  2. Step 2: Convert to fraction form
    21,816.78/30,108.33 = 12,869.52/x
  3. Step 3: Cross multiply
    21,816.78x = 30,108.33 × 12,869.52
  4. Step 4: Simplify right side
    21,816.78x = 387,479,755.10
  5. Step 5: Solve for x
    x = 387,479,755.10/21,816.78
  6. Step 6: Final answer
    x = 17,760.63

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