Home / 13,369.14-20,042.43-8,427.89

Finding the Fourth Proportional to 13,369.14, 20,042.43 and 8,427.89

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Solution

The fourth proportional to 13,369.14, 20,042.43 and 8,427.89 is: 12,634.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,369.14 : 20,042.43 = 8,427.89 : x
  2. Step 2: Convert to fraction form
    13,369.14/20,042.43 = 8,427.89/x
  3. Step 3: Cross multiply
    13,369.14x = 20,042.43 × 8,427.89
  4. Step 4: Simplify right side
    13,369.14x = 168,915,395.37
  5. Step 5: Solve for x
    x = 168,915,395.37/13,369.14
  6. Step 6: Final answer
    x = 12,634.72

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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.