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Finding the Third Proportional to 13,281 and 19,407

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Solution

The third proportional to 13,281 and 19,407 is: 28,358.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,281 : 19,407 = 19,407 : x
  2. Step 2: Convert to fraction form
    13,281/19,407 = 19,407/x
  3. Step 3: Cross multiply
    13,281x = 19,407 × 19,407
  4. Step 4: Simplify right side
    13,281x = 376,631,649
  5. Step 5: Solve for x
    x = 376,631,649/13,281
  6. Step 6: Final answer
    x = 28,358.68

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Why These Related Problems?

These problems maintain the same ratio (1.46) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.