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Finding the Third Proportional to 15,693 and 21,948

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Solution

The third proportional to 15,693 and 21,948 is: 30,696.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,693 : 21,948 = 21,948 : x
  2. Step 2: Convert to fraction form
    15,693/21,948 = 21,948/x
  3. Step 3: Cross multiply
    15,693x = 21,948 × 21,948
  4. Step 4: Simplify right side
    15,693x = 481,714,704
  5. Step 5: Solve for x
    x = 481,714,704/15,693
  6. Step 6: Final answer
    x = 30,696.15

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.