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Finding the Third Proportional to 15,656 and 21,804

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Solution

The third proportional to 15,656 and 21,804 is: 30,366.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,656 : 21,804 = 21,804 : x
  2. Step 2: Convert to fraction form
    15,656/21,804 = 21,804/x
  3. Step 3: Cross multiply
    15,656x = 21,804 × 21,804
  4. Step 4: Simplify right side
    15,656x = 475,414,416
  5. Step 5: Solve for x
    x = 475,414,416/15,656
  6. Step 6: Final answer
    x = 30,366.28

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.