Home / 20,170.79-27,833.56-11,216.85

Finding the Fourth Proportional to 20,170.79, 27,833.56 and 11,216.85

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Solution

The fourth proportional to 20,170.79, 27,833.56 and 11,216.85 is: 15,478.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,170.79 : 27,833.56 = 11,216.85 : x
  2. Step 2: Convert to fraction form
    20,170.79/27,833.56 = 11,216.85/x
  3. Step 3: Cross multiply
    20,170.79x = 27,833.56 × 11,216.85
  4. Step 4: Simplify right side
    20,170.79x = 312,204,735.07
  5. Step 5: Solve for x
    x = 312,204,735.07/20,170.79
  6. Step 6: Final answer
    x = 15,478.06

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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.