Home / 20,161.24-27,821.89-11,086.58

Finding the Fourth Proportional to 20,161.24, 27,821.89 and 11,086.58

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Solution

The fourth proportional to 20,161.24, 27,821.89 and 11,086.58 is: 15,299.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,161.24 : 27,821.89 = 11,086.58 : x
  2. Step 2: Convert to fraction form
    20,161.24/27,821.89 = 11,086.58/x
  3. Step 3: Cross multiply
    20,161.24x = 27,821.89 × 11,086.58
  4. Step 4: Simplify right side
    20,161.24x = 308,449,692.65
  5. Step 5: Solve for x
    x = 308,449,692.65/20,161.24
  6. Step 6: Final answer
    x = 15,299.14

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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.