Home / 13,286.57-19,931.01-3,425.77

Finding the Fourth Proportional to 13,286.57, 19,931.01 and 3,425.77

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Solution

The fourth proportional to 13,286.57, 19,931.01 and 3,425.77 is: 5,138.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,286.57 : 19,931.01 = 3,425.77 : x
  2. Step 2: Convert to fraction form
    13,286.57/19,931.01 = 3,425.77/x
  3. Step 3: Cross multiply
    13,286.57x = 19,931.01 × 3,425.77
  4. Step 4: Simplify right side
    13,286.57x = 68,278,939.34
  5. Step 5: Solve for x
    x = 68,278,939.34/13,286.57
  6. Step 6: Final answer
    x = 5,138.94

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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.