Home / 21,144.67-29,173.03-12,190.97

Finding the Fourth Proportional to 21,144.67, 29,173.03 and 12,190.97

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Solution

The fourth proportional to 21,144.67, 29,173.03 and 12,190.97 is: 16,819.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,144.67 : 29,173.03 = 12,190.97 : x
  2. Step 2: Convert to fraction form
    21,144.67/29,173.03 = 12,190.97/x
  3. Step 3: Cross multiply
    21,144.67x = 29,173.03 × 12,190.97
  4. Step 4: Simplify right side
    21,144.67x = 355,647,575.99
  5. Step 5: Solve for x
    x = 355,647,575.99/21,144.67
  6. Step 6: Final answer
    x = 16,819.73

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1.5x scale

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.