Home / 20,195.57-30,283.30-12,794.40

Finding the Fourth Proportional to 20,195.57, 30,283.30 and 12,794.40

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Solution

The fourth proportional to 20,195.57, 30,283.30 and 12,794.40 is: 19,185.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,195.57 : 30,283.30 = 12,794.40 : x
  2. Step 2: Convert to fraction form
    20,195.57/30,283.30 = 12,794.40/x
  3. Step 3: Cross multiply
    20,195.57x = 30,283.30 × 12,794.40
  4. Step 4: Simplify right side
    20,195.57x = 387,456,589.55
  5. Step 5: Solve for x
    x = 387,456,589.55/20,195.57
  6. Step 6: Final answer
    x = 19,185.23

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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.