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Finding the Third Proportional to 9,681.75 and 20,238.75

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Solution

The third proportional to 9,681.75 and 20,238.75 is: 42,307.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,681.75 : 20,238.75 = 20,238.75 : x
  2. Step 2: Convert to fraction form
    9,681.75/20,238.75 = 20,238.75/x
  3. Step 3: Cross multiply
    9,681.75x = 20,238.75 × 20,238.75
  4. Step 4: Simplify right side
    9,681.75x = 409,607,001.56
  5. Step 5: Solve for x
    x = 409,607,001.56/9,681.75
  6. Step 6: Final answer
    x = 42,307.12

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Why These Related Problems?

These problems maintain the same ratio (2.09) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.