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Finding the Fourth Proportional to 20,783.60, 31,175.52 and 6,932.56

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Solution

The fourth proportional to 20,783.60, 31,175.52 and 6,932.56 is: 10,398.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,783.60 : 31,175.52 = 6,932.56 : x
  2. Step 2: Convert to fraction form
    20,783.60/31,175.52 = 6,932.56/x
  3. Step 3: Cross multiply
    20,783.60x = 31,175.52 × 6,932.56
  4. Step 4: Simplify right side
    20,783.60x = 216,126,162.93
  5. Step 5: Solve for x
    x = 216,126,162.93/20,783.60
  6. Step 6: Final answer
    x = 10,398.88

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