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Finding the Third Proportional to 10,671.75 and 15,211.13

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Solution

The third proportional to 10,671.75 and 15,211.13 is: 21,681.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,671.75 : 15,211.13 = 15,211.13 : x
  2. Step 2: Convert to fraction form
    10,671.75/15,211.13 = 15,211.13/x
  3. Step 3: Cross multiply
    10,671.75x = 15,211.13 × 15,211.13
  4. Step 4: Simplify right side
    10,671.75x = 231,378,323.77
  5. Step 5: Solve for x
    x = 231,378,323.77/10,671.75
  6. Step 6: Final answer
    x = 21,681.39

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Why These Related Problems?

These problems maintain the same ratio (1.43) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.