Home / 20,114.36-27,757.40-11,161.79

Finding the Fourth Proportional to 20,114.36, 27,757.40 and 11,161.79

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Solution

The fourth proportional to 20,114.36, 27,757.40 and 11,161.79 is: 15,403.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,114.36 : 27,757.40 = 11,161.79 : x
  2. Step 2: Convert to fraction form
    20,114.36/27,757.40 = 11,161.79/x
  3. Step 3: Cross multiply
    20,114.36x = 27,757.40 × 11,161.79
  4. Step 4: Simplify right side
    20,114.36x = 309,822,269.75
  5. Step 5: Solve for x
    x = 309,822,269.75/20,114.36
  6. Step 6: Final answer
    x = 15,403.04

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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.