Home / 20,161.14-27,781.34-15,596.09

Finding the Fourth Proportional to 20,161.14, 27,781.34 and 15,596.09

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Solution

The fourth proportional to 20,161.14, 27,781.34 and 15,596.09 is: 21,490.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,161.14 : 27,781.34 = 15,596.09 : x
  2. Step 2: Convert to fraction form
    20,161.14/27,781.34 = 15,596.09/x
  3. Step 3: Cross multiply
    20,161.14x = 27,781.34 × 15,596.09
  4. Step 4: Simplify right side
    20,161.14x = 433,280,062.07
  5. Step 5: Solve for x
    x = 433,280,062.07/20,161.14
  6. Step 6: Final answer
    x = 21,490.86

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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.