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Finding the Third Proportional to 15,788 and 17,260

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Solution

The third proportional to 15,788 and 17,260 is: 18,869.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,788 : 17,260 = 17,260 : x
  2. Step 2: Convert to fraction form
    15,788/17,260 = 17,260/x
  3. Step 3: Cross multiply
    15,788x = 17,260 × 17,260
  4. Step 4: Simplify right side
    15,788x = 297,907,600
  5. Step 5: Solve for x
    x = 297,907,600/15,788
  6. Step 6: Final answer
    x = 18,869.24

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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.