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Finding the Third Proportional to 15,708.75 and 20,646.75

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Solution

The third proportional to 15,708.75 and 20,646.75 is: 27,137.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,708.75 : 20,646.75 = 20,646.75 : x
  2. Step 2: Convert to fraction form
    15,708.75/20,646.75 = 20,646.75/x
  3. Step 3: Cross multiply
    15,708.75x = 20,646.75 × 20,646.75
  4. Step 4: Simplify right side
    15,708.75x = 426,288,285.56
  5. Step 5: Solve for x
    x = 426,288,285.56/15,708.75
  6. Step 6: Final answer
    x = 27,137.00

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Why These Related Problems?

These problems maintain the same ratio (1.31) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.