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Finding the Third Proportional to 15,626 and 18,038

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Solution

The third proportional to 15,626 and 18,038 is: 20,822.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,626 : 18,038 = 18,038 : x
  2. Step 2: Convert to fraction form
    15,626/18,038 = 18,038/x
  3. Step 3: Cross multiply
    15,626x = 18,038 × 18,038
  4. Step 4: Simplify right side
    15,626x = 325,369,444
  5. Step 5: Solve for x
    x = 325,369,444/15,626
  6. Step 6: Final answer
    x = 20,822.31

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Why These Related Problems?

These problems maintain the same ratio (1.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.