Home / 20,198.20-30,297.30-13,977.40

Finding the Fourth Proportional to 20,198.20, 30,297.30 and 13,977.40

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Solution

The fourth proportional to 20,198.20, 30,297.30 and 13,977.40 is: 20,966.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,198.20 : 30,297.30 = 13,977.40 : x
  2. Step 2: Convert to fraction form
    20,198.20/30,297.30 = 13,977.40/x
  3. Step 3: Cross multiply
    20,198.20x = 30,297.30 × 13,977.40
  4. Step 4: Simplify right side
    20,198.20x = 423,477,481.02
  5. Step 5: Solve for x
    x = 423,477,481.02/20,198.20
  6. Step 6: Final answer
    x = 20,966.10

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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.