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Finding the Third Proportional to 18,080 and 19,736

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Solution

The third proportional to 18,080 and 19,736 is: 21,543.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,080 : 19,736 = 19,736 : x
  2. Step 2: Convert to fraction form
    18,080/19,736 = 19,736/x
  3. Step 3: Cross multiply
    18,080x = 19,736 × 19,736
  4. Step 4: Simplify right side
    18,080x = 389,509,696
  5. Step 5: Solve for x
    x = 389,509,696/18,080
  6. Step 6: Final answer
    x = 21,543.68

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.09) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.