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Finding the Third Proportional to 20,385 and 32,430.38

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Solution

The third proportional to 20,385 and 32,430.38 is: 51,593.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,385 : 32,430.38 = 32,430.38 : x
  2. Step 2: Convert to fraction form
    20,385/32,430.38 = 32,430.38/x
  3. Step 3: Cross multiply
    20,385x = 32,430.38 × 32,430.38
  4. Step 4: Simplify right side
    20,385x = 1,051,729,222.64
  5. Step 5: Solve for x
    x = 1,051,729,222.64/20,385
  6. Step 6: Final answer
    x = 51,593.29

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Why These Related Problems?

These problems maintain the same ratio (1.59) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.