Home / 20,225.38-27,910.74-11,272.85

Finding the Fourth Proportional to 20,225.38, 27,910.74 and 11,272.85

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Solution

The fourth proportional to 20,225.38, 27,910.74 and 11,272.85 is: 15,556.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,225.38 : 27,910.74 = 11,272.85 : x
  2. Step 2: Convert to fraction form
    20,225.38/27,910.74 = 11,272.85/x
  3. Step 3: Cross multiply
    20,225.38x = 27,910.74 × 11,272.85
  4. Step 4: Simplify right side
    20,225.38x = 314,633,749.79
  5. Step 5: Solve for x
    x = 314,633,749.79/20,225.38
  6. Step 6: Final answer
    x = 15,556.38

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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.