Home / 20,161.33-27,823.56-11,209.75

Finding the Fourth Proportional to 20,161.33, 27,823.56 and 11,209.75

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Solution

The fourth proportional to 20,161.33, 27,823.56 and 11,209.75 is: 15,469.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,161.33 : 27,823.56 = 11,209.75 : x
  2. Step 2: Convert to fraction form
    20,161.33/27,823.56 = 11,209.75/x
  3. Step 3: Cross multiply
    20,161.33x = 27,823.56 × 11,209.75
  4. Step 4: Simplify right side
    20,161.33x = 311,895,151.71
  5. Step 5: Solve for x
    x = 311,895,151.71/20,161.33
  6. Step 6: Final answer
    x = 15,469.97

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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.