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Finding the Third Proportional to 8,574 and 12,609

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Solution

The third proportional to 8,574 and 12,609 is: 18,542.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,574 : 12,609 = 12,609 : x
  2. Step 2: Convert to fraction form
    8,574/12,609 = 12,609/x
  3. Step 3: Cross multiply
    8,574x = 12,609 × 12,609
  4. Step 4: Simplify right side
    8,574x = 158,986,881
  5. Step 5: Solve for x
    x = 158,986,881/8,574
  6. Step 6: Final answer
    x = 18,542.91

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Why These Related Problems?

These problems maintain the same ratio (1.47) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.