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Finding the Third Proportional to 9,980 and 15,319

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Solution

The third proportional to 9,980 and 15,319 is: 23,514.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,980 : 15,319 = 15,319 : x
  2. Step 2: Convert to fraction form
    9,980/15,319 = 15,319/x
  3. Step 3: Cross multiply
    9,980x = 15,319 × 15,319
  4. Step 4: Simplify right side
    9,980x = 234,671,761
  5. Step 5: Solve for x
    x = 234,671,761/9,980
  6. Step 6: Final answer
    x = 23,514.20

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Why These Related Problems?

These problems maintain the same ratio (1.53) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.