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Finding the Fourth Proportional to 8,632.63, 12,936.59 and 6,869.69

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Solution

The fourth proportional to 8,632.63, 12,936.59 and 6,869.69 is: 10,294.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,632.63 : 12,936.59 = 6,869.69 : x
  2. Step 2: Convert to fraction form
    8,632.63/12,936.59 = 6,869.69/x
  3. Step 3: Cross multiply
    8,632.63x = 12,936.59 × 6,869.69
  4. Step 4: Simplify right side
    8,632.63x = 88,870,282.49
  5. Step 5: Solve for x
    x = 88,870,282.49/8,632.63
  6. Step 6: Final answer
    x = 10,294.70

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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.