Home / 12,447.41-18,674.58-5,428.04

Finding the Fourth Proportional to 12,447.41, 18,674.58 and 5,428.04

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Solution

The fourth proportional to 12,447.41, 18,674.58 and 5,428.04 is: 8,143.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,447.41 : 18,674.58 = 5,428.04 : x
  2. Step 2: Convert to fraction form
    12,447.41/18,674.58 = 5,428.04/x
  3. Step 3: Cross multiply
    12,447.41x = 18,674.58 × 5,428.04
  4. Step 4: Simplify right side
    12,447.41x = 101,366,273.85
  5. Step 5: Solve for x
    x = 101,366,273.85/12,447.41
  6. Step 6: Final answer
    x = 8,143.57

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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.