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Finding the Third Proportional to 10,065 and 13,720.50

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Solution

The third proportional to 10,065 and 13,720.50 is: 18,703.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,065 : 13,720.50 = 13,720.50 : x
  2. Step 2: Convert to fraction form
    10,065/13,720.50 = 13,720.50/x
  3. Step 3: Cross multiply
    10,065x = 13,720.50 × 13,720.50
  4. Step 4: Simplify right side
    10,065x = 188,252,120.25
  5. Step 5: Solve for x
    x = 188,252,120.25/10,065
  6. Step 6: Final answer
    x = 18,703.64

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Why These Related Problems?

These problems maintain the same ratio (1.36) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.