Home / 21,104.25-31,644.68-8,633.03

Finding the Fourth Proportional to 21,104.25, 31,644.68 and 8,633.03

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Solution

The fourth proportional to 21,104.25, 31,644.68 and 8,633.03 is: 12,944.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,104.25 : 31,644.68 = 8,633.03 : x
  2. Step 2: Convert to fraction form
    21,104.25/31,644.68 = 8,633.03/x
  3. Step 3: Cross multiply
    21,104.25x = 31,644.68 × 8,633.03
  4. Step 4: Simplify right side
    21,104.25x = 273,189,471.78
  5. Step 5: Solve for x
    x = 273,189,471.78/21,104.25
  6. Step 6: Final answer
    x = 12,944.76

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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.