Home / 20,149.75-27,819.05-12,992.03

Finding the Fourth Proportional to 20,149.75, 27,819.05 and 12,992.03

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Solution

The fourth proportional to 20,149.75, 27,819.05 and 12,992.03 is: 17,936.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,149.75 : 27,819.05 = 12,992.03 : x
  2. Step 2: Convert to fraction form
    20,149.75/27,819.05 = 12,992.03/x
  3. Step 3: Cross multiply
    20,149.75x = 27,819.05 × 12,992.03
  4. Step 4: Simplify right side
    20,149.75x = 361,425,832.44
  5. Step 5: Solve for x
    x = 361,425,832.44/20,149.75
  6. Step 6: Final answer
    x = 17,936.99

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.