Home / 20,226.20-30,352.95-7,078.68

Finding the Fourth Proportional to 20,226.20, 30,352.95 and 7,078.68

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Solution

The fourth proportional to 20,226.20, 30,352.95 and 7,078.68 is: 10,622.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,226.20 : 30,352.95 = 7,078.68 : x
  2. Step 2: Convert to fraction form
    20,226.20/30,352.95 = 7,078.68/x
  3. Step 3: Cross multiply
    20,226.20x = 30,352.95 × 7,078.68
  4. Step 4: Simplify right side
    20,226.20x = 214,858,820.11
  5. Step 5: Solve for x
    x = 214,858,820.11/20,226.20
  6. Step 6: Final answer
    x = 10,622.80

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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.