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Finding the Third Proportional to 12,240 and 13,344

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Solution

The third proportional to 12,240 and 13,344 is: 14,547.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,240 : 13,344 = 13,344 : x
  2. Step 2: Convert to fraction form
    12,240/13,344 = 13,344/x
  3. Step 3: Cross multiply
    12,240x = 13,344 × 13,344
  4. Step 4: Simplify right side
    12,240x = 178,062,336
  5. Step 5: Solve for x
    x = 178,062,336/12,240
  6. Step 6: Final answer
    x = 14,547.58

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Why These Related Problems?

These problems maintain the same ratio (1.09) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.