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Finding the Third Proportional to 15,844.36 and 21,215.04

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Solution

The third proportional to 15,844.36 and 21,215.04 is: 28,406.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,844.36 : 21,215.04 = 21,215.04 : x
  2. Step 2: Convert to fraction form
    15,844.36/21,215.04 = 21,215.04/x
  3. Step 3: Cross multiply
    15,844.36x = 21,215.04 × 21,215.04
  4. Step 4: Simplify right side
    15,844.36x = 450,077,882.42
  5. Step 5: Solve for x
    x = 450,077,882.42/15,844.36
  6. Step 6: Final answer
    x = 28,406.19

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Why These Related Problems?

These problems maintain the same ratio (1.34) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.