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Finding the Third Proportional to 13,438.83 and 20,156.13

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Solution

The third proportional to 13,438.83 and 20,156.13 is: 30,231.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,438.83 : 20,156.13 = 20,156.13 : x
  2. Step 2: Convert to fraction form
    13,438.83/20,156.13 = 20,156.13/x
  3. Step 3: Cross multiply
    13,438.83x = 20,156.13 × 20,156.13
  4. Step 4: Simplify right side
    13,438.83x = 406,269,689.96
  5. Step 5: Solve for x
    x = 406,269,689.96/13,438.83
  6. Step 6: Final answer
    x = 30,231.04

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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.