Home / 20,824.80-28,738.92-11,394.24

Finding the Fourth Proportional to 20,824.80, 28,738.92 and 11,394.24

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Solution

The fourth proportional to 20,824.80, 28,738.92 and 11,394.24 is: 15,724.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,824.80 : 28,738.92 = 11,394.24 : x
  2. Step 2: Convert to fraction form
    20,824.80/28,738.92 = 11,394.24/x
  3. Step 3: Cross multiply
    20,824.80x = 28,738.92 × 11,394.24
  4. Step 4: Simplify right side
    20,824.80x = 327,458,151.82
  5. Step 5: Solve for x
    x = 327,458,151.82/20,824.80
  6. Step 6: Final answer
    x = 15,724.43

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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.