Home / 20,221.72-27,906.05-11,725.49

Finding the Fourth Proportional to 20,221.72, 27,906.05 and 11,725.49

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Solution

The fourth proportional to 20,221.72, 27,906.05 and 11,725.49 is: 16,181.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,221.72 : 27,906.05 = 11,725.49 : x
  2. Step 2: Convert to fraction form
    20,221.72/27,906.05 = 11,725.49/x
  3. Step 3: Cross multiply
    20,221.72x = 27,906.05 × 11,725.49
  4. Step 4: Simplify right side
    20,221.72x = 327,212,209.29
  5. Step 5: Solve for x
    x = 327,212,209.29/20,221.72
  6. Step 6: Final answer
    x = 16,181.23

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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.