Home / 20,680.82-28,539.32-11,249.38

Finding the Fourth Proportional to 20,680.82, 28,539.32 and 11,249.38

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Solution

The fourth proportional to 20,680.82, 28,539.32 and 11,249.38 is: 15,524.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,680.82 : 28,539.32 = 11,249.38 : x
  2. Step 2: Convert to fraction form
    20,680.82/28,539.32 = 11,249.38/x
  3. Step 3: Cross multiply
    20,680.82x = 28,539.32 × 11,249.38
  4. Step 4: Simplify right side
    20,680.82x = 321,049,655.62
  5. Step 5: Solve for x
    x = 321,049,655.62/20,680.82
  6. Step 6: Final answer
    x = 15,524.03

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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.