Home / 18,179.32-25,072.44-12,819.60

Finding the Fourth Proportional to 18,179.32, 25,072.44 and 12,819.60

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Solution

The fourth proportional to 18,179.32, 25,072.44 and 12,819.60 is: 17,680.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,179.32 : 25,072.44 = 12,819.60 : x
  2. Step 2: Convert to fraction form
    18,179.32/25,072.44 = 12,819.60/x
  3. Step 3: Cross multiply
    18,179.32x = 25,072.44 × 12,819.60
  4. Step 4: Simplify right side
    18,179.32x = 321,418,651.82
  5. Step 5: Solve for x
    x = 321,418,651.82/18,179.32
  6. Step 6: Final answer
    x = 17,680.46

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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.