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Finding the Fourth Proportional to 13,318.70, 18,375.52 and 8,843.32

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Solution

The fourth proportional to 13,318.70, 18,375.52 and 8,843.32 is: 12,200.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,318.70 : 18,375.52 = 8,843.32 : x
  2. Step 2: Convert to fraction form
    13,318.70/18,375.52 = 8,843.32/x
  3. Step 3: Cross multiply
    13,318.70x = 18,375.52 × 8,843.32
  4. Step 4: Simplify right side
    13,318.70x = 162,500,603.53
  5. Step 5: Solve for x
    x = 162,500,603.53/13,318.70
  6. Step 6: Final answer
    x = 12,200.94

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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.