Home / 18,375.87-25,366.46-12,415.61

Finding the Fourth Proportional to 18,375.87, 25,366.46 and 12,415.61

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Solution

The fourth proportional to 18,375.87, 25,366.46 and 12,415.61 is: 17,138.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,375.87 : 25,366.46 = 12,415.61 : x
  2. Step 2: Convert to fraction form
    18,375.87/25,366.46 = 12,415.61/x
  3. Step 3: Cross multiply
    18,375.87x = 25,366.46 × 12,415.61
  4. Step 4: Simplify right side
    18,375.87x = 314,940,145.62
  5. Step 5: Solve for x
    x = 314,940,145.62/18,375.87
  6. Step 6: Final answer
    x = 17,138.79

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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.