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Finding the Third Proportional to 18,126.75 and 28,012.13

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Solution

The third proportional to 18,126.75 and 28,012.13 is: 43,288.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,126.75 : 28,012.13 = 28,012.13 : x
  2. Step 2: Convert to fraction form
    18,126.75/28,012.13 = 28,012.13/x
  3. Step 3: Cross multiply
    18,126.75x = 28,012.13 × 28,012.13
  4. Step 4: Simplify right side
    18,126.75x = 784,679,147.02
  5. Step 5: Solve for x
    x = 784,679,147.02/18,126.75
  6. Step 6: Final answer
    x = 43,288.46

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.