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Finding the Fourth Proportional to 13,584, 20,379.96 and 5,793.60

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Solution

The fourth proportional to 13,584, 20,379.96 and 5,793.60 is: 8,692.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,584 : 20,379.96 = 5,793.60 : x
  2. Step 2: Convert to fraction form
    13,584/20,379.96 = 5,793.60/x
  3. Step 3: Cross multiply
    13,584x = 20,379.96 × 5,793.60
  4. Step 4: Simplify right side
    13,584x = 118,073,336.26
  5. Step 5: Solve for x
    x = 118,073,336.26/13,584
  6. Step 6: Final answer
    x = 8,692.09

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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.