Home / 20,824.57-28,738.62-11,393.13

Finding the Fourth Proportional to 20,824.57, 28,738.62 and 11,393.13

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Solution

The fourth proportional to 20,824.57, 28,738.62 and 11,393.13 is: 15,722.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,824.57 : 28,738.62 = 11,393.13 : x
  2. Step 2: Convert to fraction form
    20,824.57/28,738.62 = 11,393.13/x
  3. Step 3: Cross multiply
    20,824.57x = 28,738.62 × 11,393.13
  4. Step 4: Simplify right side
    20,824.57x = 327,422,833.68
  5. Step 5: Solve for x
    x = 327,422,833.68/20,824.57
  6. Step 6: Final answer
    x = 15,722.91

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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.