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Finding the Third Proportional to 7,220.50 and 15,008.50

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Solution

The third proportional to 7,220.50 and 15,008.50 is: 31,196.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,220.50 : 15,008.50 = 15,008.50 : x
  2. Step 2: Convert to fraction form
    7,220.50/15,008.50 = 15,008.50/x
  3. Step 3: Cross multiply
    7,220.50x = 15,008.50 × 15,008.50
  4. Step 4: Simplify right side
    7,220.50x = 225,255,072.25
  5. Step 5: Solve for x
    x = 225,255,072.25/7,220.50
  6. Step 6: Final answer
    x = 31,196.60

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Why These Related Problems?

These problems maintain the same ratio (2.08) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.