Home / 12,254.90-18,382.46-3,489.81

Finding the Fourth Proportional to 12,254.90, 18,382.46 and 3,489.81

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Solution

The fourth proportional to 12,254.90, 18,382.46 and 3,489.81 is: 5,234.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,254.90 : 18,382.46 = 3,489.81 : x
  2. Step 2: Convert to fraction form
    12,254.90/18,382.46 = 3,489.81/x
  3. Step 3: Cross multiply
    12,254.90x = 18,382.46 × 3,489.81
  4. Step 4: Simplify right side
    12,254.90x = 64,151,292.73
  5. Step 5: Solve for x
    x = 64,151,292.73/12,254.90
  6. Step 6: Final answer
    x = 5,234.75

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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.