Home / 20,121.05-27,768.37-11,623.53

Finding the Fourth Proportional to 20,121.05, 27,768.37 and 11,623.53

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Solution

The fourth proportional to 20,121.05, 27,768.37 and 11,623.53 is: 16,041.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,121.05 : 27,768.37 = 11,623.53 : x
  2. Step 2: Convert to fraction form
    20,121.05/27,768.37 = 11,623.53/x
  3. Step 3: Cross multiply
    20,121.05x = 27,768.37 × 11,623.53
  4. Step 4: Simplify right side
    20,121.05x = 322,766,481.75
  5. Step 5: Solve for x
    x = 322,766,481.75/20,121.05
  6. Step 6: Final answer
    x = 16,041.23

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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.