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Finding the Third Proportional to 6,996.80 and 15,120.84

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Solution

The third proportional to 6,996.80 and 15,120.84 is: 32,677.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,996.80 : 15,120.84 = 15,120.84 : x
  2. Step 2: Convert to fraction form
    6,996.80/15,120.84 = 15,120.84/x
  3. Step 3: Cross multiply
    6,996.80x = 15,120.84 × 15,120.84
  4. Step 4: Simplify right side
    6,996.80x = 228,639,915.71
  5. Step 5: Solve for x
    x = 228,639,915.71/6,996.80
  6. Step 6: Final answer
    x = 32,677.80

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Why These Related Problems?

These problems maintain the same ratio (2.16) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.