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Finding the Third Proportional to 18,121.50 and 28,641

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Solution

The third proportional to 18,121.50 and 28,641 is: 45,267.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,121.50 : 28,641 = 28,641 : x
  2. Step 2: Convert to fraction form
    18,121.50/28,641 = 28,641/x
  3. Step 3: Cross multiply
    18,121.50x = 28,641 × 28,641
  4. Step 4: Simplify right side
    18,121.50x = 820,306,881
  5. Step 5: Solve for x
    x = 820,306,881/18,121.50
  6. Step 6: Final answer
    x = 45,267.05

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Why These Related Problems?

These problems maintain the same ratio (1.58) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.