Home / 20,984.82-28,958.01-11,553.18

Finding the Fourth Proportional to 20,984.82, 28,958.01 and 11,553.18

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Solution

The fourth proportional to 20,984.82, 28,958.01 and 11,553.18 is: 15,942.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,984.82 : 28,958.01 = 11,553.18 : x
  2. Step 2: Convert to fraction form
    20,984.82/28,958.01 = 11,553.18/x
  3. Step 3: Cross multiply
    20,984.82x = 28,958.01 × 11,553.18
  4. Step 4: Simplify right side
    20,984.82x = 334,557,101.97
  5. Step 5: Solve for x
    x = 334,557,101.97/20,984.82
  6. Step 6: Final answer
    x = 15,942.81

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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.