Home / 20,169.84-27,836.19-11,217.18

Finding the Fourth Proportional to 20,169.84, 27,836.19 and 11,217.18

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Solution

The fourth proportional to 20,169.84, 27,836.19 and 11,217.18 is: 15,480.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,169.84 : 27,836.19 = 11,217.18 : x
  2. Step 2: Convert to fraction form
    20,169.84/27,836.19 = 11,217.18/x
  3. Step 3: Cross multiply
    20,169.84x = 27,836.19 × 11,217.18
  4. Step 4: Simplify right side
    20,169.84x = 312,243,553.74
  5. Step 5: Solve for x
    x = 312,243,553.74/20,169.84
  6. Step 6: Final answer
    x = 15,480.72

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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.