Home / 18,149.33-25,054.49-12,109.61

Finding the Fourth Proportional to 18,149.33, 25,054.49 and 12,109.61

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Solution

The fourth proportional to 18,149.33, 25,054.49 and 12,109.61 is: 16,716.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,149.33 : 25,054.49 = 12,109.61 : x
  2. Step 2: Convert to fraction form
    18,149.33/25,054.49 = 12,109.61/x
  3. Step 3: Cross multiply
    18,149.33x = 25,054.49 × 12,109.61
  4. Step 4: Simplify right side
    18,149.33x = 303,399,916.83
  5. Step 5: Solve for x
    x = 303,399,916.83/18,149.33
  6. Step 6: Final answer
    x = 16,716.87

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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.