Home / 13,876.50-19,149.21-8,211.54

Finding the Fourth Proportional to 13,876.50, 19,149.21 and 8,211.54

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Solution

The fourth proportional to 13,876.50, 19,149.21 and 8,211.54 is: 11,331.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,876.50 : 19,149.21 = 8,211.54 : x
  2. Step 2: Convert to fraction form
    13,876.50/19,149.21 = 8,211.54/x
  3. Step 3: Cross multiply
    13,876.50x = 19,149.21 × 8,211.54
  4. Step 4: Simplify right side
    13,876.50x = 157,244,503.88
  5. Step 5: Solve for x
    x = 157,244,503.88/13,876.50
  6. Step 6: Final answer
    x = 11,331.71

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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.