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Finding the Third Proportional to 15,487.88 and 21,551.06

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Solution

The third proportional to 15,487.88 and 21,551.06 is: 29,987.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,487.88 : 21,551.06 = 21,551.06 : x
  2. Step 2: Convert to fraction form
    15,487.88/21,551.06 = 21,551.06/x
  3. Step 3: Cross multiply
    15,487.88x = 21,551.06 × 21,551.06
  4. Step 4: Simplify right side
    15,487.88x = 464,448,294.88
  5. Step 5: Solve for x
    x = 464,448,294.88/15,487.88
  6. Step 6: Final answer
    x = 29,987.86

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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.