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Finding the Third Proportional to 10,431 and 15,643.50

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Solution

The third proportional to 10,431 and 15,643.50 is: 23,460.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,431 : 15,643.50 = 15,643.50 : x
  2. Step 2: Convert to fraction form
    10,431/15,643.50 = 15,643.50/x
  3. Step 3: Cross multiply
    10,431x = 15,643.50 × 15,643.50
  4. Step 4: Simplify right side
    10,431x = 244,719,092.25
  5. Step 5: Solve for x
    x = 244,719,092.25/10,431
  6. Step 6: Final answer
    x = 23,460.75

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.