Home / 20,121.67-27,769.11-11,625.35

Finding the Fourth Proportional to 20,121.67, 27,769.11 and 11,625.35

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Solution

The fourth proportional to 20,121.67, 27,769.11 and 11,625.35 is: 16,043.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,121.67 : 27,769.11 = 11,625.35 : x
  2. Step 2: Convert to fraction form
    20,121.67/27,769.11 = 11,625.35/x
  3. Step 3: Cross multiply
    20,121.67x = 27,769.11 × 11,625.35
  4. Step 4: Simplify right side
    20,121.67x = 322,825,622.94
  5. Step 5: Solve for x
    x = 322,825,622.94/20,121.67
  6. Step 6: Final answer
    x = 16,043.68

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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.