Home / 20,121.84-27,765.18-11,169.41

Finding the Fourth Proportional to 20,121.84, 27,765.18 and 11,169.41

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Solution

The fourth proportional to 20,121.84, 27,765.18 and 11,169.41 is: 15,412.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,121.84 : 27,765.18 = 11,169.41 : x
  2. Step 2: Convert to fraction form
    20,121.84/27,765.18 = 11,169.41/x
  3. Step 3: Cross multiply
    20,121.84x = 27,765.18 × 11,169.41
  4. Step 4: Simplify right side
    20,121.84x = 310,120,679.14
  5. Step 5: Solve for x
    x = 310,120,679.14/20,121.84
  6. Step 6: Final answer
    x = 15,412.14

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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.