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Finding the Third Proportional to 15,249 and 20,574

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Solution

The third proportional to 15,249 and 20,574 is: 27,758.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,249 : 20,574 = 20,574 : x
  2. Step 2: Convert to fraction form
    15,249/20,574 = 20,574/x
  3. Step 3: Cross multiply
    15,249x = 20,574 × 20,574
  4. Step 4: Simplify right side
    15,249x = 423,289,476
  5. Step 5: Solve for x
    x = 423,289,476/15,249
  6. Step 6: Final answer
    x = 27,758.51

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Why These Related Problems?

These problems maintain the same ratio (1.35) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.