Home / 20,912.41-28,859.17-11,481.58

Finding the Fourth Proportional to 20,912.41, 28,859.17 and 11,481.58

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Solution

The fourth proportional to 20,912.41, 28,859.17 and 11,481.58 is: 15,844.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,912.41 : 28,859.17 = 11,481.58 : x
  2. Step 2: Convert to fraction form
    20,912.41/28,859.17 = 11,481.58/x
  3. Step 3: Cross multiply
    20,912.41x = 28,859.17 × 11,481.58
  4. Step 4: Simplify right side
    20,912.41x = 331,348,696.09
  5. Step 5: Solve for x
    x = 331,348,696.09/20,912.41
  6. Step 6: Final answer
    x = 15,844.60

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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.