Home / 20,132.70-30,168.26-8,439.54

Finding the Fourth Proportional to 20,132.70, 30,168.26 and 8,439.54

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Solution

The fourth proportional to 20,132.70, 30,168.26 and 8,439.54 is: 12,646.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,132.70 : 30,168.26 = 8,439.54 : x
  2. Step 2: Convert to fraction form
    20,132.70/30,168.26 = 8,439.54/x
  3. Step 3: Cross multiply
    20,132.70x = 30,168.26 × 8,439.54
  4. Step 4: Simplify right side
    20,132.70x = 254,606,237.00
  5. Step 5: Solve for x
    x = 254,606,237.00/20,132.70
  6. Step 6: Final answer
    x = 12,646.40

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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.