Home / 12,178.46-18,268.38-3,414.06

Finding the Fourth Proportional to 12,178.46, 18,268.38 and 3,414.06

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Solution

The fourth proportional to 12,178.46, 18,268.38 and 3,414.06 is: 5,121.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,178.46 : 18,268.38 = 3,414.06 : x
  2. Step 2: Convert to fraction form
    12,178.46/18,268.38 = 3,414.06/x
  3. Step 3: Cross multiply
    12,178.46x = 18,268.38 × 3,414.06
  4. Step 4: Simplify right side
    12,178.46x = 62,369,345.42
  5. Step 5: Solve for x
    x = 62,369,345.42/12,178.46
  6. Step 6: Final answer
    x = 5,121.28

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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.