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Finding the Fourth Proportional to 28,241.82, 38,968.56 and 16,300.80

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Solution

The fourth proportional to 28,241.82, 38,968.56 and 16,300.80 is: 22,492.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,241.82 : 38,968.56 = 16,300.80 : x
  2. Step 2: Convert to fraction form
    28,241.82/38,968.56 = 16,300.80/x
  3. Step 3: Cross multiply
    28,241.82x = 38,968.56 × 16,300.80
  4. Step 4: Simplify right side
    28,241.82x = 635,218,702.85
  5. Step 5: Solve for x
    x = 635,218,702.85/28,241.82
  6. Step 6: Final answer
    x = 22,492.13

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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.