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Finding the Third Proportional to 10,145.25 and 14,478.75

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Solution

The third proportional to 10,145.25 and 14,478.75 is: 20,663.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,145.25 : 14,478.75 = 14,478.75 : x
  2. Step 2: Convert to fraction form
    10,145.25/14,478.75 = 14,478.75/x
  3. Step 3: Cross multiply
    10,145.25x = 14,478.75 × 14,478.75
  4. Step 4: Simplify right side
    10,145.25x = 209,634,201.56
  5. Step 5: Solve for x
    x = 209,634,201.56/10,145.25
  6. Step 6: Final answer
    x = 20,663.29

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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.