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Finding the Fourth Proportional to 8,857.68, 13,269.24 and 6,900.72

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Solution

The fourth proportional to 8,857.68, 13,269.24 and 6,900.72 is: 10,337.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,857.68 : 13,269.24 = 6,900.72 : x
  2. Step 2: Convert to fraction form
    8,857.68/13,269.24 = 6,900.72/x
  3. Step 3: Cross multiply
    8,857.68x = 13,269.24 × 6,900.72
  4. Step 4: Simplify right side
    8,857.68x = 91,567,309.85
  5. Step 5: Solve for x
    x = 91,567,309.85/8,857.68
  6. Step 6: Final answer
    x = 10,337.62

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1.5x scale

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.