Home / 21,932.72-32,894.22-8,781.56

Finding the Fourth Proportional to 21,932.72, 32,894.22 and 8,781.56

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Solution

The fourth proportional to 21,932.72, 32,894.22 and 8,781.56 is: 13,170.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,932.72 : 32,894.22 = 8,781.56 : x
  2. Step 2: Convert to fraction form
    21,932.72/32,894.22 = 8,781.56/x
  3. Step 3: Cross multiply
    21,932.72x = 32,894.22 × 8,781.56
  4. Step 4: Simplify right side
    21,932.72x = 288,862,566.58
  5. Step 5: Solve for x
    x = 288,862,566.58/21,932.72
  6. Step 6: Final answer
    x = 13,170.39

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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.