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Finding the Third Proportional to 15,000 and 19,788

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Solution

The third proportional to 15,000 and 19,788 is: 26,104.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,000 : 19,788 = 19,788 : x
  2. Step 2: Convert to fraction form
    15,000/19,788 = 19,788/x
  3. Step 3: Cross multiply
    15,000x = 19,788 × 19,788
  4. Step 4: Simplify right side
    15,000x = 391,564,944
  5. Step 5: Solve for x
    x = 391,564,944/15,000
  6. Step 6: Final answer
    x = 26,104.33

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.32) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.