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Finding the Third Proportional to 12,200 and 15,804

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Solution

The third proportional to 12,200 and 15,804 is: 20,472.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,200 : 15,804 = 15,804 : x
  2. Step 2: Convert to fraction form
    12,200/15,804 = 15,804/x
  3. Step 3: Cross multiply
    12,200x = 15,804 × 15,804
  4. Step 4: Simplify right side
    12,200x = 249,766,416
  5. Step 5: Solve for x
    x = 249,766,416/12,200
  6. Step 6: Final answer
    x = 20,472.66

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Why These Related Problems?

These problems maintain the same ratio (1.30) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.