Home / 20,825.16-28,738.68-11,393.73

Finding the Fourth Proportional to 20,825.16, 28,738.68 and 11,393.73

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Solution

The fourth proportional to 20,825.16, 28,738.68 and 11,393.73 is: 15,723.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,825.16 : 28,738.68 = 11,393.73 : x
  2. Step 2: Convert to fraction form
    20,825.16/28,738.68 = 11,393.73/x
  3. Step 3: Cross multiply
    20,825.16x = 28,738.68 × 11,393.73
  4. Step 4: Simplify right side
    20,825.16x = 327,440,760.48
  5. Step 5: Solve for x
    x = 327,440,760.48/20,825.16
  6. Step 6: Final answer
    x = 15,723.33

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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.