Home / 21,872.96-32,781.74-13,972.44

Finding the Fourth Proportional to 21,872.96, 32,781.74 and 13,972.44

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Solution

The fourth proportional to 21,872.96, 32,781.74 and 13,972.44 is: 20,940.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,872.96 : 32,781.74 = 13,972.44 : x
  2. Step 2: Convert to fraction form
    21,872.96/32,781.74 = 13,972.44/x
  3. Step 3: Cross multiply
    21,872.96x = 32,781.74 × 13,972.44
  4. Step 4: Simplify right side
    21,872.96x = 458,040,895.25
  5. Step 5: Solve for x
    x = 458,040,895.25/21,872.96
  6. Step 6: Final answer
    x = 20,940.97

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1.5x scale

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.