Home / 11,309.40-16,949.70-8,227.80

Finding the Fourth Proportional to 11,309.40, 16,949.70 and 8,227.80

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Solution

The fourth proportional to 11,309.40, 16,949.70 and 8,227.80 is: 12,331.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,309.40 : 16,949.70 = 8,227.80 : x
  2. Step 2: Convert to fraction form
    11,309.40/16,949.70 = 8,227.80/x
  3. Step 3: Cross multiply
    11,309.40x = 16,949.70 × 8,227.80
  4. Step 4: Simplify right side
    11,309.40x = 139,458,741.66
  5. Step 5: Solve for x
    x = 139,458,741.66/11,309.40
  6. Step 6: Final answer
    x = 12,331.22

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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.