Home / 20,198.38-30,298.11-6,871.35

Finding the Fourth Proportional to 20,198.38, 30,298.11 and 6,871.35

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Solution

The fourth proportional to 20,198.38, 30,298.11 and 6,871.35 is: 10,307.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,198.38 : 30,298.11 = 6,871.35 : x
  2. Step 2: Convert to fraction form
    20,198.38/30,298.11 = 6,871.35/x
  3. Step 3: Cross multiply
    20,198.38x = 30,298.11 × 6,871.35
  4. Step 4: Simplify right side
    20,198.38x = 208,188,732.30
  5. Step 5: Solve for x
    x = 208,188,732.30/20,198.38
  6. Step 6: Final answer
    x = 10,307.20

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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.