Home / 13,878.73-20,819.31-6,382.18

Finding the Fourth Proportional to 13,878.73, 20,819.31 and 6,382.18

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Solution

The fourth proportional to 13,878.73, 20,819.31 and 6,382.18 is: 9,573.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,878.73 : 20,819.31 = 6,382.18 : x
  2. Step 2: Convert to fraction form
    13,878.73/20,819.31 = 6,382.18/x
  3. Step 3: Cross multiply
    13,878.73x = 20,819.31 × 6,382.18
  4. Step 4: Simplify right side
    13,878.73x = 132,872,583.90
  5. Step 5: Solve for x
    x = 132,872,583.90/13,878.73
  6. Step 6: Final answer
    x = 9,573.83

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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.