Home / 20,679.82-28,537.94-11,248.38

Finding the Fourth Proportional to 20,679.82, 28,537.94 and 11,248.38

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Solution

The fourth proportional to 20,679.82, 28,537.94 and 11,248.38 is: 15,522.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,679.82 : 28,537.94 = 11,248.38 : x
  2. Step 2: Convert to fraction form
    20,679.82/28,537.94 = 11,248.38/x
  3. Step 3: Cross multiply
    20,679.82x = 28,537.94 × 11,248.38
  4. Step 4: Simplify right side
    20,679.82x = 321,005,593.54
  5. Step 5: Solve for x
    x = 321,005,593.54/20,679.82
  6. Step 6: Final answer
    x = 15,522.65

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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.