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Finding the Third Proportional to 12,988 and 17,888

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Solution

The third proportional to 12,988 and 17,888 is: 24,636.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,988 : 17,888 = 17,888 : x
  2. Step 2: Convert to fraction form
    12,988/17,888 = 17,888/x
  3. Step 3: Cross multiply
    12,988x = 17,888 × 17,888
  4. Step 4: Simplify right side
    12,988x = 319,980,544
  5. Step 5: Solve for x
    x = 319,980,544/12,988
  6. Step 6: Final answer
    x = 24,636.63

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.