Home / 13,811.62-20,717.64-3,423.38

Finding the Fourth Proportional to 13,811.62, 20,717.64 and 3,423.38

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Solution

The fourth proportional to 13,811.62, 20,717.64 and 3,423.38 is: 5,135.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,811.62 : 20,717.64 = 3,423.38 : x
  2. Step 2: Convert to fraction form
    13,811.62/20,717.64 = 3,423.38/x
  3. Step 3: Cross multiply
    13,811.62x = 20,717.64 × 3,423.38
  4. Step 4: Simplify right side
    13,811.62x = 70,924,354.42
  5. Step 5: Solve for x
    x = 70,924,354.42/13,811.62
  6. Step 6: Final answer
    x = 5,135.12

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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.