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Finding the Fourth Proportional to 8,936.10, 13,404.15 and 6,866.55

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Solution

The fourth proportional to 8,936.10, 13,404.15 and 6,866.55 is: 10,299.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,936.10 : 13,404.15 = 6,866.55 : x
  2. Step 2: Convert to fraction form
    8,936.10/13,404.15 = 6,866.55/x
  3. Step 3: Cross multiply
    8,936.10x = 13,404.15 × 6,866.55
  4. Step 4: Simplify right side
    8,936.10x = 92,040,266.18
  5. Step 5: Solve for x
    x = 92,040,266.18/8,936.10
  6. Step 6: Final answer
    x = 10,299.83

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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.