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Finding the Fourth Proportional to 21,959.82, 32,863.19 and 17,964.90

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Solution

The fourth proportional to 21,959.82, 32,863.19 and 17,964.90 is: 26,884.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,959.82 : 32,863.19 = 17,964.90 : x
  2. Step 2: Convert to fraction form
    21,959.82/32,863.19 = 17,964.90/x
  3. Step 3: Cross multiply
    21,959.82x = 32,863.19 × 17,964.90
  4. Step 4: Simplify right side
    21,959.82x = 590,383,832.21
  5. Step 5: Solve for x
    x = 590,383,832.21/21,959.82
  6. Step 6: Final answer
    x = 26,884.73

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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.