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Finding the Third Proportional to 9,346.50 and 19,989

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Solution

The third proportional to 9,346.50 and 19,989 is: 42,749.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,346.50 : 19,989 = 19,989 : x
  2. Step 2: Convert to fraction form
    9,346.50/19,989 = 19,989/x
  3. Step 3: Cross multiply
    9,346.50x = 19,989 × 19,989
  4. Step 4: Simplify right side
    9,346.50x = 399,560,121
  5. Step 5: Solve for x
    x = 399,560,121/9,346.50
  6. Step 6: Final answer
    x = 42,749.71

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Why These Related Problems?

These problems maintain the same ratio (2.14) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.