Home / 13,508.20-20,242.14-8,318.44

Finding the Fourth Proportional to 13,508.20, 20,242.14 and 8,318.44

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Solution

The fourth proportional to 13,508.20, 20,242.14 and 8,318.44 is: 12,465.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,508.20 : 20,242.14 = 8,318.44 : x
  2. Step 2: Convert to fraction form
    13,508.20/20,242.14 = 8,318.44/x
  3. Step 3: Cross multiply
    13,508.20x = 20,242.14 × 8,318.44
  4. Step 4: Simplify right side
    13,508.20x = 168,383,027.06
  5. Step 5: Solve for x
    x = 168,383,027.06/13,508.20
  6. Step 6: Final answer
    x = 12,465.25

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1.5x scale

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.