Home / 20,183.80-30,275.70-18,434.20

Finding the Fourth Proportional to 20,183.80, 30,275.70 and 18,434.20

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Solution

The fourth proportional to 20,183.80, 30,275.70 and 18,434.20 is: 27,651.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,183.80 : 30,275.70 = 18,434.20 : x
  2. Step 2: Convert to fraction form
    20,183.80/30,275.70 = 18,434.20/x
  3. Step 3: Cross multiply
    20,183.80x = 30,275.70 × 18,434.20
  4. Step 4: Simplify right side
    20,183.80x = 558,108,308.94
  5. Step 5: Solve for x
    x = 558,108,308.94/20,183.80
  6. Step 6: Final answer
    x = 27,651.30

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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.