Home / 28,629.31-39,508.38-15,884.43

Finding the Fourth Proportional to 28,629.31, 39,508.38 and 15,884.43

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Solution

The fourth proportional to 28,629.31, 39,508.38 and 15,884.43 is: 21,920.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,629.31 : 39,508.38 = 15,884.43 : x
  2. Step 2: Convert to fraction form
    28,629.31/39,508.38 = 15,884.43/x
  3. Step 3: Cross multiply
    28,629.31x = 39,508.38 × 15,884.43
  4. Step 4: Simplify right side
    28,629.31x = 627,567,948.37
  5. Step 5: Solve for x
    x = 627,567,948.37/28,629.31
  6. Step 6: Final answer
    x = 21,920.47

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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.