Home / 20,181.90-30,272.85-12,794.70

Finding the Fourth Proportional to 20,181.90, 30,272.85 and 12,794.70

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Solution

The fourth proportional to 20,181.90, 30,272.85 and 12,794.70 is: 19,192.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,181.90 : 30,272.85 = 12,794.70 : x
  2. Step 2: Convert to fraction form
    20,181.90/30,272.85 = 12,794.70/x
  3. Step 3: Cross multiply
    20,181.90x = 30,272.85 × 12,794.70
  4. Step 4: Simplify right side
    20,181.90x = 387,332,033.90
  5. Step 5: Solve for x
    x = 387,332,033.90/20,181.90
  6. Step 6: Final answer
    x = 19,192.05

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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.