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Finding the Fourth Proportional to 21,943.76, 32,919.06 and 7,149.24

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Solution

The fourth proportional to 21,943.76, 32,919.06 and 7,149.24 is: 10,724.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,943.76 : 32,919.06 = 7,149.24 : x
  2. Step 2: Convert to fraction form
    21,943.76/32,919.06 = 7,149.24/x
  3. Step 3: Cross multiply
    21,943.76x = 32,919.06 × 7,149.24
  4. Step 4: Simplify right side
    21,943.76x = 235,346,160.34
  5. Step 5: Solve for x
    x = 235,346,160.34/21,943.76
  6. Step 6: Final answer
    x = 10,724.97

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