Home / 20,155.88-30,222.12-8,306.12

Finding the Fourth Proportional to 20,155.88, 30,222.12 and 8,306.12

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Solution

The fourth proportional to 20,155.88, 30,222.12 and 8,306.12 is: 12,454.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,155.88 : 30,222.12 = 8,306.12 : x
  2. Step 2: Convert to fraction form
    20,155.88/30,222.12 = 8,306.12/x
  3. Step 3: Cross multiply
    20,155.88x = 30,222.12 × 8,306.12
  4. Step 4: Simplify right side
    20,155.88x = 251,028,555.37
  5. Step 5: Solve for x
    x = 251,028,555.37/20,155.88
  6. Step 6: Final answer
    x = 12,454.36

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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.