Home / 20,633.82-28,474.83-11,202.42

Finding the Fourth Proportional to 20,633.82, 28,474.83 and 11,202.42

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Solution

The fourth proportional to 20,633.82, 28,474.83 and 11,202.42 is: 15,459.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,633.82 : 28,474.83 = 11,202.42 : x
  2. Step 2: Convert to fraction form
    20,633.82/28,474.83 = 11,202.42/x
  3. Step 3: Cross multiply
    20,633.82x = 28,474.83 × 11,202.42
  4. Step 4: Simplify right side
    20,633.82x = 318,987,005.09
  5. Step 5: Solve for x
    x = 318,987,005.09/20,633.82
  6. Step 6: Final answer
    x = 15,459.43

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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.