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Finding the Third Proportional to 6,890 and 15,009

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Solution

The third proportional to 6,890 and 15,009 is: 32,695.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,890 : 15,009 = 15,009 : x
  2. Step 2: Convert to fraction form
    6,890/15,009 = 15,009/x
  3. Step 3: Cross multiply
    6,890x = 15,009 × 15,009
  4. Step 4: Simplify right side
    6,890x = 225,270,081
  5. Step 5: Solve for x
    x = 225,270,081/6,890
  6. Step 6: Final answer
    x = 32,695.22

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Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.