Home / 20,906.08-31,350-6,114.66

Finding the Fourth Proportional to 20,906.08, 31,350 and 6,114.66

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Solution

The fourth proportional to 20,906.08, 31,350 and 6,114.66 is: 9,169.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,906.08 : 31,350 = 6,114.66 : x
  2. Step 2: Convert to fraction form
    20,906.08/31,350 = 6,114.66/x
  3. Step 3: Cross multiply
    20,906.08x = 31,350 × 6,114.66
  4. Step 4: Simplify right side
    20,906.08x = 191,694,591
  5. Step 5: Solve for x
    x = 191,694,591/20,906.08
  6. Step 6: Final answer
    x = 9,169.32

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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.