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Finding the Fourth Proportional to 21,859.62, 32,822.23 and 12,510.20

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Solution

The fourth proportional to 21,859.62, 32,822.23 and 12,510.20 is: 18,784.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,859.62 : 32,822.23 = 12,510.20 : x
  2. Step 2: Convert to fraction form
    21,859.62/32,822.23 = 12,510.20/x
  3. Step 3: Cross multiply
    21,859.62x = 32,822.23 × 12,510.20
  4. Step 4: Simplify right side
    21,859.62x = 410,612,661.75
  5. Step 5: Solve for x
    x = 410,612,661.75/21,859.62
  6. Step 6: Final answer
    x = 18,784.07

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