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Finding the Fourth Proportional to 22,700.40, 31,326.45 and 12,629.81

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Solution

The fourth proportional to 22,700.40, 31,326.45 and 12,629.81 is: 17,429.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,700.40 : 31,326.45 = 12,629.81 : x
  2. Step 2: Convert to fraction form
    22,700.40/31,326.45 = 12,629.81/x
  3. Step 3: Cross multiply
    22,700.40x = 31,326.45 × 12,629.81
  4. Step 4: Simplify right side
    22,700.40x = 395,646,954.84
  5. Step 5: Solve for x
    x = 395,646,954.84/22,700.40
  6. Step 6: Final answer
    x = 17,429.07

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