Home / 20,824.64-28,738.43-11,393.41

Finding the Fourth Proportional to 20,824.64, 28,738.43 and 11,393.41

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Solution

The fourth proportional to 20,824.64, 28,738.43 and 11,393.41 is: 15,723.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,824.64 : 28,738.43 = 11,393.41 : x
  2. Step 2: Convert to fraction form
    20,824.64/28,738.43 = 11,393.41/x
  3. Step 3: Cross multiply
    20,824.64x = 28,738.43 × 11,393.41
  4. Step 4: Simplify right side
    20,824.64x = 327,428,515.09
  5. Step 5: Solve for x
    x = 327,428,515.09/20,824.64
  6. Step 6: Final answer
    x = 15,723.13

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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.