Home / 13,564.79-20,345.64-3,704.87

Finding the Fourth Proportional to 13,564.79, 20,345.64 and 3,704.87

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Solution

The fourth proportional to 13,564.79, 20,345.64 and 3,704.87 is: 5,556.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,564.79 : 20,345.64 = 3,704.87 : x
  2. Step 2: Convert to fraction form
    13,564.79/20,345.64 = 3,704.87/x
  3. Step 3: Cross multiply
    13,564.79x = 20,345.64 × 3,704.87
  4. Step 4: Simplify right side
    13,564.79x = 75,377,951.27
  5. Step 5: Solve for x
    x = 75,377,951.27/13,564.79
  6. Step 6: Final answer
    x = 5,556.88

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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.