Home / 20,161.38-27,781.67-15,596.33

Finding the Fourth Proportional to 20,161.38, 27,781.67 and 15,596.33

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Solution

The fourth proportional to 20,161.38, 27,781.67 and 15,596.33 is: 21,491.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,161.38 : 27,781.67 = 15,596.33 : x
  2. Step 2: Convert to fraction form
    20,161.38/27,781.67 = 15,596.33/x
  3. Step 3: Cross multiply
    20,161.38x = 27,781.67 × 15,596.33
  4. Step 4: Simplify right side
    20,161.38x = 433,292,160.59
  5. Step 5: Solve for x
    x = 433,292,160.59/20,161.38
  6. Step 6: Final answer
    x = 21,491.19

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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.