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Finding the Third Proportional to 12,988 and 27,777

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Solution

The third proportional to 12,988 and 27,777 is: 59,405.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,988 : 27,777 = 27,777 : x
  2. Step 2: Convert to fraction form
    12,988/27,777 = 27,777/x
  3. Step 3: Cross multiply
    12,988x = 27,777 × 27,777
  4. Step 4: Simplify right side
    12,988x = 771,561,729
  5. Step 5: Solve for x
    x = 771,561,729/12,988
  6. Step 6: Final answer
    x = 59,405.74

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Why These Related Problems?

These problems maintain the same ratio (2.14) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.