Home / 20,205.11-30,300.38-8,519.24

Finding the Fourth Proportional to 20,205.11, 30,300.38 and 8,519.24

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Solution

The fourth proportional to 20,205.11, 30,300.38 and 8,519.24 is: 12,775.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,205.11 : 30,300.38 = 8,519.24 : x
  2. Step 2: Convert to fraction form
    20,205.11/30,300.38 = 8,519.24/x
  3. Step 3: Cross multiply
    20,205.11x = 30,300.38 × 8,519.24
  4. Step 4: Simplify right side
    20,205.11x = 258,136,015.21
  5. Step 5: Solve for x
    x = 258,136,015.21/20,205.11
  6. Step 6: Final answer
    x = 12,775.78

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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.