Home / 20,003.26-30,004.80-18,785.30

Finding the Fourth Proportional to 20,003.26, 30,004.80 and 18,785.30

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Solution

The fourth proportional to 20,003.26, 30,004.80 and 18,785.30 is: 28,177.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,003.26 : 30,004.80 = 18,785.30 : x
  2. Step 2: Convert to fraction form
    20,003.26/30,004.80 = 18,785.30/x
  3. Step 3: Cross multiply
    20,003.26x = 30,004.80 × 18,785.30
  4. Step 4: Simplify right side
    20,003.26x = 563,649,169.44
  5. Step 5: Solve for x
    x = 563,649,169.44/20,003.26
  6. Step 6: Final answer
    x = 28,177.87

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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.