Home / 12,107.87-18,162.84-3,342.78

Finding the Fourth Proportional to 12,107.87, 18,162.84 and 3,342.78

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Solution

The fourth proportional to 12,107.87, 18,162.84 and 3,342.78 is: 5,014.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,107.87 : 18,162.84 = 3,342.78 : x
  2. Step 2: Convert to fraction form
    12,107.87/18,162.84 = 3,342.78/x
  3. Step 3: Cross multiply
    12,107.87x = 18,162.84 × 3,342.78
  4. Step 4: Simplify right side
    12,107.87x = 60,714,378.30
  5. Step 5: Solve for x
    x = 60,714,378.30/12,107.87
  6. Step 6: Final answer
    x = 5,014.46

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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.