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Finding the Third Proportional to 18,702.28 and 39,996.56

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Solution

The third proportional to 18,702.28 and 39,996.56 is: 85,536.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,702.28 : 39,996.56 = 39,996.56 : x
  2. Step 2: Convert to fraction form
    18,702.28/39,996.56 = 39,996.56/x
  3. Step 3: Cross multiply
    18,702.28x = 39,996.56 × 39,996.56
  4. Step 4: Simplify right side
    18,702.28x = 1,599,725,011.82
  5. Step 5: Solve for x
    x = 1,599,725,011.82/18,702.28
  6. Step 6: Final answer
    x = 85,536.36

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.14) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.