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Finding the Third Proportional to 7,690.50 and 12,764.25

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Solution

The third proportional to 7,690.50 and 12,764.25 is: 21,185.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,690.50 : 12,764.25 = 12,764.25 : x
  2. Step 2: Convert to fraction form
    7,690.50/12,764.25 = 12,764.25/x
  3. Step 3: Cross multiply
    7,690.50x = 12,764.25 × 12,764.25
  4. Step 4: Simplify right side
    7,690.50x = 162,926,078.06
  5. Step 5: Solve for x
    x = 162,926,078.06/7,690.50
  6. Step 6: Final answer
    x = 21,185.37

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These problems maintain the same ratio (1.66) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.