Home / 12,621.31-18,943.69-6,385.73

Finding the Fourth Proportional to 12,621.31, 18,943.69 and 6,385.73

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Solution

The fourth proportional to 12,621.31, 18,943.69 and 6,385.73 is: 9,584.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,621.31 : 18,943.69 = 6,385.73 : x
  2. Step 2: Convert to fraction form
    12,621.31/18,943.69 = 6,385.73/x
  3. Step 3: Cross multiply
    12,621.31x = 18,943.69 × 6,385.73
  4. Step 4: Simplify right side
    12,621.31x = 120,969,289.54
  5. Step 5: Solve for x
    x = 120,969,289.54/12,621.31
  6. Step 6: Final answer
    x = 9,584.53

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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.