Home / 13,484.94-20,218.96-4,121.86

Finding the Fourth Proportional to 13,484.94, 20,218.96 and 4,121.86

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Solution

The fourth proportional to 13,484.94, 20,218.96 and 4,121.86 is: 6,180.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,484.94 : 20,218.96 = 4,121.86 : x
  2. Step 2: Convert to fraction form
    13,484.94/20,218.96 = 4,121.86/x
  3. Step 3: Cross multiply
    13,484.94x = 20,218.96 × 4,121.86
  4. Step 4: Simplify right side
    13,484.94x = 83,339,722.47
  5. Step 5: Solve for x
    x = 83,339,722.47/13,484.94
  6. Step 6: Final answer
    x = 6,180.21

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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.