Home / 20,170.09-27,805.87-13,453.27

Finding the Fourth Proportional to 20,170.09, 27,805.87 and 13,453.27

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Solution

The fourth proportional to 20,170.09, 27,805.87 and 13,453.27 is: 18,546.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,170.09 : 27,805.87 = 13,453.27 : x
  2. Step 2: Convert to fraction form
    20,170.09/27,805.87 = 13,453.27/x
  3. Step 3: Cross multiply
    20,170.09x = 27,805.87 × 13,453.27
  4. Step 4: Simplify right side
    20,170.09x = 374,079,876.69
  5. Step 5: Solve for x
    x = 374,079,876.69/20,170.09
  6. Step 6: Final answer
    x = 18,546.27

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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.