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Finding the Third Proportional to 6,861 and 11,722.50

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Solution

The third proportional to 6,861 and 11,722.50 is: 20,028.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,861 : 11,722.50 = 11,722.50 : x
  2. Step 2: Convert to fraction form
    6,861/11,722.50 = 11,722.50/x
  3. Step 3: Cross multiply
    6,861x = 11,722.50 × 11,722.50
  4. Step 4: Simplify right side
    6,861x = 137,417,006.25
  5. Step 5: Solve for x
    x = 137,417,006.25/6,861
  6. Step 6: Final answer
    x = 20,028.71

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.71) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.