Home / 20,120.25-30,200.24-15,105.18

Finding the Fourth Proportional to 20,120.25, 30,200.24 and 15,105.18

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Solution

The fourth proportional to 20,120.25, 30,200.24 and 15,105.18 is: 22,672.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,120.25 : 30,200.24 = 15,105.18 : x
  2. Step 2: Convert to fraction form
    20,120.25/30,200.24 = 15,105.18/x
  3. Step 3: Cross multiply
    20,120.25x = 30,200.24 × 15,105.18
  4. Step 4: Simplify right side
    20,120.25x = 456,180,212.26
  5. Step 5: Solve for x
    x = 456,180,212.26/20,120.25
  6. Step 6: Final answer
    x = 22,672.69

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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.