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Finding the Third Proportional to 15,149 and 19,321

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Solution

The third proportional to 15,149 and 19,321 is: 24,641.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,149 : 19,321 = 19,321 : x
  2. Step 2: Convert to fraction form
    15,149/19,321 = 19,321/x
  3. Step 3: Cross multiply
    15,149x = 19,321 × 19,321
  4. Step 4: Simplify right side
    15,149x = 373,301,041
  5. Step 5: Solve for x
    x = 373,301,041/15,149
  6. Step 6: Final answer
    x = 24,641.96

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Why These Related Problems?

These problems maintain the same ratio (1.28) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.