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Finding the Third Proportional to 7,431.75 and 15,478.31

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Solution

The third proportional to 7,431.75 and 15,478.31 is: 32,237.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,431.75 : 15,478.31 = 15,478.31 : x
  2. Step 2: Convert to fraction form
    7,431.75/15,478.31 = 15,478.31/x
  3. Step 3: Cross multiply
    7,431.75x = 15,478.31 × 15,478.31
  4. Step 4: Simplify right side
    7,431.75x = 239,578,157.85
  5. Step 5: Solve for x
    x = 239,578,157.85/7,431.75
  6. Step 6: Final answer
    x = 32,237.11

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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.