Home / 18,180.80-25,091.39-11,111.93

Finding the Fourth Proportional to 18,180.80, 25,091.39 and 11,111.93

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Solution

The fourth proportional to 18,180.80, 25,091.39 and 11,111.93 is: 15,335.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,180.80 : 25,091.39 = 11,111.93 : x
  2. Step 2: Convert to fraction form
    18,180.80/25,091.39 = 11,111.93/x
  3. Step 3: Cross multiply
    18,180.80x = 25,091.39 × 11,111.93
  4. Step 4: Simplify right side
    18,180.80x = 278,813,671.61
  5. Step 5: Solve for x
    x = 278,813,671.61/18,180.80
  6. Step 6: Final answer
    x = 15,335.61

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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.