Home / 20,110.83-27,756.26-11,161.21

Finding the Fourth Proportional to 20,110.83, 27,756.26 and 11,161.21

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Solution

The fourth proportional to 20,110.83, 27,756.26 and 11,161.21 is: 15,404.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,110.83 : 27,756.26 = 11,161.21 : x
  2. Step 2: Convert to fraction form
    20,110.83/27,756.26 = 11,161.21/x
  3. Step 3: Cross multiply
    20,110.83x = 27,756.26 × 11,161.21
  4. Step 4: Simplify right side
    20,110.83x = 309,793,390.87
  5. Step 5: Solve for x
    x = 309,793,390.87/20,110.83
  6. Step 6: Final answer
    x = 15,404.31

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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.