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Finding the Third Proportional to 11,945 and 18,533.50

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Solution

The third proportional to 11,945 and 18,533.50 is: 28,756.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,945 : 18,533.50 = 18,533.50 : x
  2. Step 2: Convert to fraction form
    11,945/18,533.50 = 18,533.50/x
  3. Step 3: Cross multiply
    11,945x = 18,533.50 × 18,533.50
  4. Step 4: Simplify right side
    11,945x = 343,490,622.25
  5. Step 5: Solve for x
    x = 343,490,622.25/11,945
  6. Step 6: Final answer
    x = 28,756.02

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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.