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Finding the Fourth Proportional to 18,643.31, 27,969.34 and 6,163.33

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Solution

The fourth proportional to 18,643.31, 27,969.34 and 6,163.33 is: 9,246.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,643.31 : 27,969.34 = 6,163.33 : x
  2. Step 2: Convert to fraction form
    18,643.31/27,969.34 = 6,163.33/x
  3. Step 3: Cross multiply
    18,643.31x = 27,969.34 × 6,163.33
  4. Step 4: Simplify right side
    18,643.31x = 172,384,101.64
  5. Step 5: Solve for x
    x = 172,384,101.64/18,643.31
  6. Step 6: Final answer
    x = 9,246.43

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.