Home / 20,079.35-30,121.67-7,427.39

Finding the Fourth Proportional to 20,079.35, 30,121.67 and 7,427.39

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Solution

The fourth proportional to 20,079.35, 30,121.67 and 7,427.39 is: 11,142.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,079.35 : 30,121.67 = 7,427.39 : x
  2. Step 2: Convert to fraction form
    20,079.35/30,121.67 = 7,427.39/x
  3. Step 3: Cross multiply
    20,079.35x = 30,121.67 × 7,427.39
  4. Step 4: Simplify right side
    20,079.35x = 223,725,202.80
  5. Step 5: Solve for x
    x = 223,725,202.80/20,079.35
  6. Step 6: Final answer
    x = 11,142.06

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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.