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Finding the Fourth Proportional to 16,620.51, 22,940.40 and 12,837.90

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Solution

The fourth proportional to 16,620.51, 22,940.40 and 12,837.90 is: 17,719.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,620.51 : 22,940.40 = 12,837.90 : x
  2. Step 2: Convert to fraction form
    16,620.51/22,940.40 = 12,837.90/x
  3. Step 3: Cross multiply
    16,620.51x = 22,940.40 × 12,837.90
  4. Step 4: Simplify right side
    16,620.51x = 294,506,561.16
  5. Step 5: Solve for x
    x = 294,506,561.16/16,620.51
  6. Step 6: Final answer
    x = 17,719.47

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