Home / 18,730.44-28,105.38-13,578.84

Finding the Fourth Proportional to 18,730.44, 28,105.38 and 13,578.84

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Solution

The fourth proportional to 18,730.44, 28,105.38 and 13,578.84 is: 20,375.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,730.44 : 28,105.38 = 13,578.84 : x
  2. Step 2: Convert to fraction form
    18,730.44/28,105.38 = 13,578.84/x
  3. Step 3: Cross multiply
    18,730.44x = 28,105.38 × 13,578.84
  4. Step 4: Simplify right side
    18,730.44x = 381,638,458.16
  5. Step 5: Solve for x
    x = 381,638,458.16/18,730.44
  6. Step 6: Final answer
    x = 20,375.31

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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.