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Finding the Fourth Proportional to 20,491.73, 30,738.63 and 9,393.39

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Solution

The fourth proportional to 20,491.73, 30,738.63 and 9,393.39 is: 14,090.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,491.73 : 30,738.63 = 9,393.39 : x
  2. Step 2: Convert to fraction form
    20,491.73/30,738.63 = 9,393.39/x
  3. Step 3: Cross multiply
    20,491.73x = 30,738.63 × 9,393.39
  4. Step 4: Simplify right side
    20,491.73x = 288,739,995.29
  5. Step 5: Solve for x
    x = 288,739,995.29/20,491.73
  6. Step 6: Final answer
    x = 14,090.56

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