Home / 20,106.20-30,183.60-19,960.40

Finding the Fourth Proportional to 20,106.20, 30,183.60 and 19,960.40

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Solution

The fourth proportional to 20,106.20, 30,183.60 and 19,960.40 is: 29,964.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,106.20 : 30,183.60 = 19,960.40 : x
  2. Step 2: Convert to fraction form
    20,106.20/30,183.60 = 19,960.40/x
  3. Step 3: Cross multiply
    20,106.20x = 30,183.60 × 19,960.40
  4. Step 4: Simplify right side
    20,106.20x = 602,476,729.44
  5. Step 5: Solve for x
    x = 602,476,729.44/20,106.20
  6. Step 6: Final answer
    x = 29,964.72

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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.