Home / 12,198.12-18,294.30-5,620.20

Finding the Fourth Proportional to 12,198.12, 18,294.30 and 5,620.20

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Solution

The fourth proportional to 12,198.12, 18,294.30 and 5,620.20 is: 8,428.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,198.12 : 18,294.30 = 5,620.20 : x
  2. Step 2: Convert to fraction form
    12,198.12/18,294.30 = 5,620.20/x
  3. Step 3: Cross multiply
    12,198.12x = 18,294.30 × 5,620.20
  4. Step 4: Simplify right side
    12,198.12x = 102,817,624.86
  5. Step 5: Solve for x
    x = 102,817,624.86/12,198.12
  6. Step 6: Final answer
    x = 8,428.97

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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.