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Finding the Third Proportional to 15,153.75 and 21,043.13

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Solution

The third proportional to 15,153.75 and 21,043.13 is: 29,221.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,153.75 : 21,043.13 = 21,043.13 : x
  2. Step 2: Convert to fraction form
    15,153.75/21,043.13 = 21,043.13/x
  3. Step 3: Cross multiply
    15,153.75x = 21,043.13 × 21,043.13
  4. Step 4: Simplify right side
    15,153.75x = 442,813,109.77
  5. Step 5: Solve for x
    x = 442,813,109.77/15,153.75
  6. Step 6: Final answer
    x = 29,221.36

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.