Home / 20,212.26-27,890.78-11,717.04

Finding the Fourth Proportional to 20,212.26, 27,890.78 and 11,717.04

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Solution

The fourth proportional to 20,212.26, 27,890.78 and 11,717.04 is: 16,168.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,212.26 : 27,890.78 = 11,717.04 : x
  2. Step 2: Convert to fraction form
    20,212.26/27,890.78 = 11,717.04/x
  3. Step 3: Cross multiply
    20,212.26x = 27,890.78 × 11,717.04
  4. Step 4: Simplify right side
    20,212.26x = 326,797,430.90
  5. Step 5: Solve for x
    x = 326,797,430.90/20,212.26
  6. Step 6: Final answer
    x = 16,168.28

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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.