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Finding the Fourth Proportional to 28,871.88, 39,843.19 and 16,297.44

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Solution

The fourth proportional to 28,871.88, 39,843.19 and 16,297.44 is: 22,490.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,871.88 : 39,843.19 = 16,297.44 : x
  2. Step 2: Convert to fraction form
    28,871.88/39,843.19 = 16,297.44/x
  3. Step 3: Cross multiply
    28,871.88x = 39,843.19 × 16,297.44
  4. Step 4: Simplify right side
    28,871.88x = 649,341,799.22
  5. Step 5: Solve for x
    x = 649,341,799.22/28,871.88
  6. Step 6: Final answer
    x = 22,490.46

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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.