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Finding the Third Proportional to 6,618 and 9,929

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Solution

The third proportional to 6,618 and 9,929 is: 14,896.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,618 : 9,929 = 9,929 : x
  2. Step 2: Convert to fraction form
    6,618/9,929 = 9,929/x
  3. Step 3: Cross multiply
    6,618x = 9,929 × 9,929
  4. Step 4: Simplify right side
    6,618x = 98,585,041
  5. Step 5: Solve for x
    x = 98,585,041/6,618
  6. Step 6: Final answer
    x = 14,896.50

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.