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Finding the Fourth Proportional to 21,305.79, 31,968.68 and 10,924.83

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Solution

The fourth proportional to 21,305.79, 31,968.68 and 10,924.83 is: 16,392.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,305.79 : 31,968.68 = 10,924.83 : x
  2. Step 2: Convert to fraction form
    21,305.79/31,968.68 = 10,924.83/x
  3. Step 3: Cross multiply
    21,305.79x = 31,968.68 × 10,924.83
  4. Step 4: Simplify right side
    21,305.79x = 349,252,339.70
  5. Step 5: Solve for x
    x = 349,252,339.70/21,305.79
  6. Step 6: Final answer
    x = 16,392.37

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