Home / 20,110.94-27,756.42-11,161.31

Finding the Fourth Proportional to 20,110.94, 27,756.42 and 11,161.31

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Solution

The fourth proportional to 20,110.94, 27,756.42 and 11,161.31 is: 15,404.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,110.94 : 27,756.42 = 11,161.31 : x
  2. Step 2: Convert to fraction form
    20,110.94/27,756.42 = 11,161.31/x
  3. Step 3: Cross multiply
    20,110.94x = 27,756.42 × 11,161.31
  4. Step 4: Simplify right side
    20,110.94x = 309,797,869.33
  5. Step 5: Solve for x
    x = 309,797,869.33/20,110.94
  6. Step 6: Final answer
    x = 15,404.45

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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.