Home / 11,911.29-17,868.12-4,119.09

Finding the Fourth Proportional to 11,911.29, 17,868.12 and 4,119.09

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Solution

The fourth proportional to 11,911.29, 17,868.12 and 4,119.09 is: 6,179.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,911.29 : 17,868.12 = 4,119.09 : x
  2. Step 2: Convert to fraction form
    11,911.29/17,868.12 = 4,119.09/x
  3. Step 3: Cross multiply
    11,911.29x = 17,868.12 × 4,119.09
  4. Step 4: Simplify right side
    11,911.29x = 73,600,394.41
  5. Step 5: Solve for x
    x = 73,600,394.41/11,911.29
  6. Step 6: Final answer
    x = 6,179.04

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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.