Home / 20,225.11-27,911.52-11,272.61

Finding the Fourth Proportional to 20,225.11, 27,911.52 and 11,272.61

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Solution

The fourth proportional to 20,225.11, 27,911.52 and 11,272.61 is: 15,556.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,225.11 : 27,911.52 = 11,272.61 : x
  2. Step 2: Convert to fraction form
    20,225.11/27,911.52 = 11,272.61/x
  3. Step 3: Cross multiply
    20,225.11x = 27,911.52 × 11,272.61
  4. Step 4: Simplify right side
    20,225.11x = 314,635,679.47
  5. Step 5: Solve for x
    x = 314,635,679.47/20,225.11
  6. Step 6: Final answer
    x = 15,556.69

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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.