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Finding the Third Proportional to 7,514.50 and 11,787.50

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Solution

The third proportional to 7,514.50 and 11,787.50 is: 18,490.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,514.50 : 11,787.50 = 11,787.50 : x
  2. Step 2: Convert to fraction form
    7,514.50/11,787.50 = 11,787.50/x
  3. Step 3: Cross multiply
    7,514.50x = 11,787.50 × 11,787.50
  4. Step 4: Simplify right side
    7,514.50x = 138,945,156.25
  5. Step 5: Solve for x
    x = 138,945,156.25/7,514.50
  6. Step 6: Final answer
    x = 18,490.27

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Why These Related Problems?

These problems maintain the same ratio (1.57) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.