Home / 20,806.62-28,711.66-11,852.48

Finding the Fourth Proportional to 20,806.62, 28,711.66 and 11,852.48

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Solution

The fourth proportional to 20,806.62, 28,711.66 and 11,852.48 is: 16,355.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,806.62 : 28,711.66 = 11,852.48 : x
  2. Step 2: Convert to fraction form
    20,806.62/28,711.66 = 11,852.48/x
  3. Step 3: Cross multiply
    20,806.62x = 28,711.66 × 11,852.48
  4. Step 4: Simplify right side
    20,806.62x = 340,304,202.73
  5. Step 5: Solve for x
    x = 340,304,202.73/20,806.62
  6. Step 6: Final answer
    x = 16,355.57

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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.