Home / 13,121.92-19,684.14-4,357

Finding the Fourth Proportional to 13,121.92, 19,684.14 and 4,357

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Solution

The fourth proportional to 13,121.92, 19,684.14 and 4,357 is: 6,535.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,121.92 : 19,684.14 = 4,357 : x
  2. Step 2: Convert to fraction form
    13,121.92/19,684.14 = 4,357/x
  3. Step 3: Cross multiply
    13,121.92x = 19,684.14 × 4,357
  4. Step 4: Simplify right side
    13,121.92x = 85,763,797.98
  5. Step 5: Solve for x
    x = 85,763,797.98/13,121.92
  6. Step 6: Final answer
    x = 6,535.92

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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.