Home / 20,086.20-30,161.70-13,541.40

Finding the Fourth Proportional to 20,086.20, 30,161.70 and 13,541.40

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Solution

The fourth proportional to 20,086.20, 30,161.70 and 13,541.40 is: 20,333.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,086.20 : 30,161.70 = 13,541.40 : x
  2. Step 2: Convert to fraction form
    20,086.20/30,161.70 = 13,541.40/x
  3. Step 3: Cross multiply
    20,086.20x = 30,161.70 × 13,541.40
  4. Step 4: Simplify right side
    20,086.20x = 408,431,644.38
  5. Step 5: Solve for x
    x = 408,431,644.38/20,086.20
  6. Step 6: Final answer
    x = 20,333.94

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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.