Home / 20,122.98-27,768.54-11,169.84

Finding the Fourth Proportional to 20,122.98, 27,768.54 and 11,169.84

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Solution

The fourth proportional to 20,122.98, 27,768.54 and 11,169.84 is: 15,413.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,122.98 : 27,768.54 = 11,169.84 : x
  2. Step 2: Convert to fraction form
    20,122.98/27,768.54 = 11,169.84/x
  3. Step 3: Cross multiply
    20,122.98x = 27,768.54 × 11,169.84
  4. Step 4: Simplify right side
    20,122.98x = 310,170,148.83
  5. Step 5: Solve for x
    x = 310,170,148.83/20,122.98
  6. Step 6: Final answer
    x = 15,413.73

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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.