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Finding the Third Proportional to 13,240.55 and 18,561.66

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Solution

The third proportional to 13,240.55 and 18,561.66 is: 26,021.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,240.55 : 18,561.66 = 18,561.66 : x
  2. Step 2: Convert to fraction form
    13,240.55/18,561.66 = 18,561.66/x
  3. Step 3: Cross multiply
    13,240.55x = 18,561.66 × 18,561.66
  4. Step 4: Simplify right side
    13,240.55x = 344,535,082.74
  5. Step 5: Solve for x
    x = 344,535,082.74/13,240.55
  6. Step 6: Final answer
    x = 26,021.21

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.