Home / 13,208.20-18,229.19-8,174.04

Finding the Fourth Proportional to 13,208.20, 18,229.19 and 8,174.04

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Solution

The fourth proportional to 13,208.20, 18,229.19 and 8,174.04 is: 11,281.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,208.20 : 18,229.19 = 8,174.04 : x
  2. Step 2: Convert to fraction form
    13,208.20/18,229.19 = 8,174.04/x
  3. Step 3: Cross multiply
    13,208.20x = 18,229.19 × 8,174.04
  4. Step 4: Simplify right side
    13,208.20x = 149,006,147.17
  5. Step 5: Solve for x
    x = 149,006,147.17/13,208.20
  6. Step 6: Final answer
    x = 11,281.33

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.