Home / 20,138.52-30,180.18-15,204.12

Finding the Fourth Proportional to 20,138.52, 30,180.18 and 15,204.12

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Solution

The fourth proportional to 20,138.52, 30,180.18 and 15,204.12 is: 22,785.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,138.52 : 30,180.18 = 15,204.12 : x
  2. Step 2: Convert to fraction form
    20,138.52/30,180.18 = 15,204.12/x
  3. Step 3: Cross multiply
    20,138.52x = 30,180.18 × 15,204.12
  4. Step 4: Simplify right side
    20,138.52x = 458,863,078.34
  5. Step 5: Solve for x
    x = 458,863,078.34/20,138.52
  6. Step 6: Final answer
    x = 22,785.34

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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.