Home / 20,118.58-30,180.60-8,429.06

Finding the Fourth Proportional to 20,118.58, 30,180.60 and 8,429.06

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Solution

The fourth proportional to 20,118.58, 30,180.60 and 8,429.06 is: 12,644.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,118.58 : 30,180.60 = 8,429.06 : x
  2. Step 2: Convert to fraction form
    20,118.58/30,180.60 = 8,429.06/x
  3. Step 3: Cross multiply
    20,118.58x = 30,180.60 × 8,429.06
  4. Step 4: Simplify right side
    20,118.58x = 254,394,163.69
  5. Step 5: Solve for x
    x = 254,394,163.69/20,118.58
  6. Step 6: Final answer
    x = 12,644.74

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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.