Home / 20,170.78-27,835.46-11,218.26

Finding the Fourth Proportional to 20,170.78, 27,835.46 and 11,218.26

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Solution

The fourth proportional to 20,170.78, 27,835.46 and 11,218.26 is: 15,481.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,170.78 : 27,835.46 = 11,218.26 : x
  2. Step 2: Convert to fraction form
    20,170.78/27,835.46 = 11,218.26/x
  3. Step 3: Cross multiply
    20,170.78x = 27,835.46 × 11,218.26
  4. Step 4: Simplify right side
    20,170.78x = 312,265,427.50
  5. Step 5: Solve for x
    x = 312,265,427.50/20,170.78
  6. Step 6: Final answer
    x = 15,481.08

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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.