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Finding the Third Proportional to 10,221.19 and 13,739.63

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Solution

The third proportional to 10,221.19 and 13,739.63 is: 18,469.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,221.19 : 13,739.63 = 13,739.63 : x
  2. Step 2: Convert to fraction form
    10,221.19/13,739.63 = 13,739.63/x
  3. Step 3: Cross multiply
    10,221.19x = 13,739.63 × 13,739.63
  4. Step 4: Simplify right side
    10,221.19x = 188,777,295.14
  5. Step 5: Solve for x
    x = 188,777,295.14/10,221.19
  6. Step 6: Final answer
    x = 18,469.21

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.34) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.