Home / 20,169.81-27,834.13-11,217.79

Finding the Fourth Proportional to 20,169.81, 27,834.13 and 11,217.79

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Solution

The fourth proportional to 20,169.81, 27,834.13 and 11,217.79 is: 15,480.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,169.81 : 27,834.13 = 11,217.79 : x
  2. Step 2: Convert to fraction form
    20,169.81/27,834.13 = 11,217.79/x
  3. Step 3: Cross multiply
    20,169.81x = 27,834.13 × 11,217.79
  4. Step 4: Simplify right side
    20,169.81x = 312,237,473.99
  5. Step 5: Solve for x
    x = 312,237,473.99/20,169.81
  6. Step 6: Final answer
    x = 15,480.44

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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.