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Finding the Third Proportional to 8,655 and 19,747.50

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Solution

The third proportional to 8,655 and 19,747.50 is: 45,056.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,655 : 19,747.50 = 19,747.50 : x
  2. Step 2: Convert to fraction form
    8,655/19,747.50 = 19,747.50/x
  3. Step 3: Cross multiply
    8,655x = 19,747.50 × 19,747.50
  4. Step 4: Simplify right side
    8,655x = 389,963,756.25
  5. Step 5: Solve for x
    x = 389,963,756.25/8,655
  6. Step 6: Final answer
    x = 45,056.47

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Why These Related Problems?

These problems maintain the same ratio (2.28) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.