Home / 28,648.88-39,531.23-15,902.15

Finding the Fourth Proportional to 28,648.88, 39,531.23 and 15,902.15

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Solution

The fourth proportional to 28,648.88, 39,531.23 and 15,902.15 is: 21,942.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,648.88 : 39,531.23 = 15,902.15 : x
  2. Step 2: Convert to fraction form
    28,648.88/39,531.23 = 15,902.15/x
  3. Step 3: Cross multiply
    28,648.88x = 39,531.23 × 15,902.15
  4. Step 4: Simplify right side
    28,648.88x = 628,631,791.67
  5. Step 5: Solve for x
    x = 628,631,791.67/28,648.88
  6. Step 6: Final answer
    x = 21,942.63

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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.