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Finding the Third Proportional to 15,192.56 and 20,811.94

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Solution

The third proportional to 15,192.56 and 20,811.94 is: 28,509.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,192.56 : 20,811.94 = 20,811.94 : x
  2. Step 2: Convert to fraction form
    15,192.56/20,811.94 = 20,811.94/x
  3. Step 3: Cross multiply
    15,192.56x = 20,811.94 × 20,811.94
  4. Step 4: Simplify right side
    15,192.56x = 433,136,742.50
  5. Step 5: Solve for x
    x = 433,136,742.50/15,192.56
  6. Step 6: Final answer
    x = 28,509.79

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.