Home / 11,620.21-17,430.17-2,855.20

Finding the Fourth Proportional to 11,620.21, 17,430.17 and 2,855.20

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Solution

The fourth proportional to 11,620.21, 17,430.17 and 2,855.20 is: 4,282.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,620.21 : 17,430.17 = 2,855.20 : x
  2. Step 2: Convert to fraction form
    11,620.21/17,430.17 = 2,855.20/x
  3. Step 3: Cross multiply
    11,620.21x = 17,430.17 × 2,855.20
  4. Step 4: Simplify right side
    11,620.21x = 49,766,621.38
  5. Step 5: Solve for x
    x = 49,766,621.38/11,620.21
  6. Step 6: Final answer
    x = 4,282.76

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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.