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Finding the Third Proportional to 7,478.50 and 11,732.25

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Solution

The third proportional to 7,478.50 and 11,732.25 is: 18,405.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,478.50 : 11,732.25 = 11,732.25 : x
  2. Step 2: Convert to fraction form
    7,478.50/11,732.25 = 11,732.25/x
  3. Step 3: Cross multiply
    7,478.50x = 11,732.25 × 11,732.25
  4. Step 4: Simplify right side
    7,478.50x = 137,645,690.06
  5. Step 5: Solve for x
    x = 137,645,690.06/7,478.50
  6. Step 6: Final answer
    x = 18,405.52

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Why These Related Problems?

These problems maintain the same ratio (1.57) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.