Home / 28,629.85-39,508.46-15,882.97

Finding the Fourth Proportional to 28,629.85, 39,508.46 and 15,882.97

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Solution

The fourth proportional to 28,629.85, 39,508.46 and 15,882.97 is: 21,918.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,629.85 : 39,508.46 = 15,882.97 : x
  2. Step 2: Convert to fraction form
    28,629.85/39,508.46 = 15,882.97/x
  3. Step 3: Cross multiply
    28,629.85x = 39,508.46 × 15,882.97
  4. Step 4: Simplify right side
    28,629.85x = 627,511,506.74
  5. Step 5: Solve for x
    x = 627,511,506.74/28,629.85
  6. Step 6: Final answer
    x = 21,918.09

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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.