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Finding the Third Proportional to 11,787 and 18,394.50

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Solution

The third proportional to 11,787 and 18,394.50 is: 28,706.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,787 : 18,394.50 = 18,394.50 : x
  2. Step 2: Convert to fraction form
    11,787/18,394.50 = 18,394.50/x
  3. Step 3: Cross multiply
    11,787x = 18,394.50 × 18,394.50
  4. Step 4: Simplify right side
    11,787x = 338,357,630.25
  5. Step 5: Solve for x
    x = 338,357,630.25/11,787
  6. Step 6: Final answer
    x = 28,706.00

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Why These Related Problems?

These problems maintain the same ratio (1.56) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.