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Finding the Third Proportional to 11,487.38 and 18,430.88

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Solution

The third proportional to 11,487.38 and 18,430.88 is: 29,571.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,487.38 : 18,430.88 = 18,430.88 : x
  2. Step 2: Convert to fraction form
    11,487.38/18,430.88 = 18,430.88/x
  3. Step 3: Cross multiply
    11,487.38x = 18,430.88 × 18,430.88
  4. Step 4: Simplify right side
    11,487.38x = 339,697,153.27
  5. Step 5: Solve for x
    x = 339,697,153.27/11,487.38
  6. Step 6: Final answer
    x = 29,571.35

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Why These Related Problems?

These problems maintain the same ratio (1.60) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.