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Finding the Third Proportional to 12,484 and 19,478

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Solution

The third proportional to 12,484 and 19,478 is: 30,390.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,484 : 19,478 = 19,478 : x
  2. Step 2: Convert to fraction form
    12,484/19,478 = 19,478/x
  3. Step 3: Cross multiply
    12,484x = 19,478 × 19,478
  4. Step 4: Simplify right side
    12,484x = 379,392,484
  5. Step 5: Solve for x
    x = 379,392,484/12,484
  6. Step 6: Final answer
    x = 30,390.30

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Why These Related Problems?

These problems maintain the same ratio (1.56) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.