Home / 11,239.97-16,861.78-4,220.53

Finding the Fourth Proportional to 11,239.97, 16,861.78 and 4,220.53

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Solution

The fourth proportional to 11,239.97, 16,861.78 and 4,220.53 is: 6,331.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,239.97 : 16,861.78 = 4,220.53 : x
  2. Step 2: Convert to fraction form
    11,239.97/16,861.78 = 4,220.53/x
  3. Step 3: Cross multiply
    11,239.97x = 16,861.78 × 4,220.53
  4. Step 4: Simplify right side
    11,239.97x = 71,165,648.34
  5. Step 5: Solve for x
    x = 71,165,648.34/11,239.97
  6. Step 6: Final answer
    x = 6,331.48

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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.