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Finding the Third Proportional to 18,247.78 and 30,331.81

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Solution

The third proportional to 18,247.78 and 30,331.81 is: 50,418.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,247.78 : 30,331.81 = 30,331.81 : x
  2. Step 2: Convert to fraction form
    18,247.78/30,331.81 = 30,331.81/x
  3. Step 3: Cross multiply
    18,247.78x = 30,331.81 × 30,331.81
  4. Step 4: Simplify right side
    18,247.78x = 920,018,731.05
  5. Step 5: Solve for x
    x = 920,018,731.05/18,247.78
  6. Step 6: Final answer
    x = 50,418.11

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.66) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.