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Finding the Third Proportional to 18,447 and 28,642.50

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Solution

The third proportional to 18,447 and 28,642.50 is: 44,472.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,447 : 28,642.50 = 28,642.50 : x
  2. Step 2: Convert to fraction form
    18,447/28,642.50 = 28,642.50/x
  3. Step 3: Cross multiply
    18,447x = 28,642.50 × 28,642.50
  4. Step 4: Simplify right side
    18,447x = 820,392,806.25
  5. Step 5: Solve for x
    x = 820,392,806.25/18,447
  6. Step 6: Final answer
    x = 44,472.97

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.