Home / 28,531.72-39,371.94-15,954.28

Finding the Fourth Proportional to 28,531.72, 39,371.94 and 15,954.28

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Solution

The fourth proportional to 28,531.72, 39,371.94 and 15,954.28 is: 22,015.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,531.72 : 39,371.94 = 15,954.28 : x
  2. Step 2: Convert to fraction form
    28,531.72/39,371.94 = 15,954.28/x
  3. Step 3: Cross multiply
    28,531.72x = 39,371.94 × 15,954.28
  4. Step 4: Simplify right side
    28,531.72x = 628,150,954.90
  5. Step 5: Solve for x
    x = 628,150,954.90/28,531.72
  6. Step 6: Final answer
    x = 22,015.88

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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.