Home / 28,515.44-39,351.57-15,767.97

Finding the Fourth Proportional to 28,515.44, 39,351.57 and 15,767.97

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Solution

The fourth proportional to 28,515.44, 39,351.57 and 15,767.97 is: 21,759.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,515.44 : 39,351.57 = 15,767.97 : x
  2. Step 2: Convert to fraction form
    28,515.44/39,351.57 = 15,767.97/x
  3. Step 3: Cross multiply
    28,515.44x = 39,351.57 × 15,767.97
  4. Step 4: Simplify right side
    28,515.44x = 620,494,257.21
  5. Step 5: Solve for x
    x = 620,494,257.21/28,515.44
  6. Step 6: Final answer
    x = 21,759.94

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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.