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Finding the Fourth Proportional to 8,809.56, 13,202.94 and 6,721.86

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Solution

The fourth proportional to 8,809.56, 13,202.94 and 6,721.86 is: 10,074.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,809.56 : 13,202.94 = 6,721.86 : x
  2. Step 2: Convert to fraction form
    8,809.56/13,202.94 = 6,721.86/x
  3. Step 3: Cross multiply
    8,809.56x = 13,202.94 × 6,721.86
  4. Step 4: Simplify right side
    8,809.56x = 88,748,314.27
  5. Step 5: Solve for x
    x = 88,748,314.27/8,809.56
  6. Step 6: Final answer
    x = 10,074.09

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.