Home / 13,560.50-20,319.96-8,615

Finding the Fourth Proportional to 13,560.50, 20,319.96 and 8,615

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Solution

The fourth proportional to 13,560.50, 20,319.96 and 8,615 is: 12,909.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,560.50 : 20,319.96 = 8,615 : x
  2. Step 2: Convert to fraction form
    13,560.50/20,319.96 = 8,615/x
  3. Step 3: Cross multiply
    13,560.50x = 20,319.96 × 8,615
  4. Step 4: Simplify right side
    13,560.50x = 175,056,455.40
  5. Step 5: Solve for x
    x = 175,056,455.40/13,560.50
  6. Step 6: Final answer
    x = 12,909.29

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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.