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Finding the Third Proportional to 8,572 and 12,965.50

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Solution

The third proportional to 8,572 and 12,965.50 is: 19,610.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,572 : 12,965.50 = 12,965.50 : x
  2. Step 2: Convert to fraction form
    8,572/12,965.50 = 12,965.50/x
  3. Step 3: Cross multiply
    8,572x = 12,965.50 × 12,965.50
  4. Step 4: Simplify right side
    8,572x = 168,104,190.25
  5. Step 5: Solve for x
    x = 168,104,190.25/8,572
  6. Step 6: Final answer
    x = 19,610.85

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.