Home / 20,131.10-30,229.05-15,206.30

Finding the Fourth Proportional to 20,131.10, 30,229.05 and 15,206.30

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Solution

The fourth proportional to 20,131.10, 30,229.05 and 15,206.30 is: 22,833.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,131.10 : 30,229.05 = 15,206.30 : x
  2. Step 2: Convert to fraction form
    20,131.10/30,229.05 = 15,206.30/x
  3. Step 3: Cross multiply
    20,131.10x = 30,229.05 × 15,206.30
  4. Step 4: Simplify right side
    20,131.10x = 459,672,003.02
  5. Step 5: Solve for x
    x = 459,672,003.02/20,131.10
  6. Step 6: Final answer
    x = 22,833.92

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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.