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Finding the Fourth Proportional to 12,318.26, 16,984.35 and 8,544.65

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Solution

The fourth proportional to 12,318.26, 16,984.35 and 8,544.65 is: 11,781.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,318.26 : 16,984.35 = 8,544.65 : x
  2. Step 2: Convert to fraction form
    12,318.26/16,984.35 = 8,544.65/x
  3. Step 3: Cross multiply
    12,318.26x = 16,984.35 × 8,544.65
  4. Step 4: Simplify right side
    12,318.26x = 145,125,241.31
  5. Step 5: Solve for x
    x = 145,125,241.31/12,318.26
  6. Step 6: Final answer
    x = 11,781.31

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.