Home / 20,112.33-27,756.77-11,161.58

Finding the Fourth Proportional to 20,112.33, 27,756.77 and 11,161.58

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Solution

The fourth proportional to 20,112.33, 27,756.77 and 11,161.58 is: 15,403.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,112.33 : 27,756.77 = 11,161.58 : x
  2. Step 2: Convert to fraction form
    20,112.33/27,756.77 = 11,161.58/x
  3. Step 3: Cross multiply
    20,112.33x = 27,756.77 × 11,161.58
  4. Step 4: Simplify right side
    20,112.33x = 309,809,214.30
  5. Step 5: Solve for x
    x = 309,809,214.30/20,112.33
  6. Step 6: Final answer
    x = 15,403.94

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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.