Home / 20,858.38-28,786.66-11,907.27

Finding the Fourth Proportional to 20,858.38, 28,786.66 and 11,907.27

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Solution

The fourth proportional to 20,858.38, 28,786.66 and 11,907.27 is: 16,433.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,858.38 : 28,786.66 = 11,907.27 : x
  2. Step 2: Convert to fraction form
    20,858.38/28,786.66 = 11,907.27/x
  3. Step 3: Cross multiply
    20,858.38x = 28,786.66 × 11,907.27
  4. Step 4: Simplify right side
    20,858.38x = 342,770,503.25
  5. Step 5: Solve for x
    x = 342,770,503.25/20,858.38
  6. Step 6: Final answer
    x = 16,433.23

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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.