Home / 20,825.82-28,740.11-11,394.41

Finding the Fourth Proportional to 20,825.82, 28,740.11 and 11,394.41

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Solution

The fourth proportional to 20,825.82, 28,740.11 and 11,394.41 is: 15,724.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,825.82 : 28,740.11 = 11,394.41 : x
  2. Step 2: Convert to fraction form
    20,825.82/28,740.11 = 11,394.41/x
  3. Step 3: Cross multiply
    20,825.82x = 28,740.11 × 11,394.41
  4. Step 4: Simplify right side
    20,825.82x = 327,476,396.11
  5. Step 5: Solve for x
    x = 327,476,396.11/20,825.82
  6. Step 6: Final answer
    x = 15,724.54

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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.