Home / 21,149.75-29,186.94-11,589.44

Finding the Fourth Proportional to 21,149.75, 29,186.94 and 11,589.44

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Solution

The fourth proportional to 21,149.75, 29,186.94 and 11,589.44 is: 15,993.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,149.75 : 29,186.94 = 11,589.44 : x
  2. Step 2: Convert to fraction form
    21,149.75/29,186.94 = 11,589.44/x
  3. Step 3: Cross multiply
    21,149.75x = 29,186.94 × 11,589.44
  4. Step 4: Simplify right side
    21,149.75x = 338,260,362.88
  5. Step 5: Solve for x
    x = 338,260,362.88/21,149.75
  6. Step 6: Final answer
    x = 15,993.59

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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.