Home / 13,945.90-20,919.52-4,585.71

Finding the Fourth Proportional to 13,945.90, 20,919.52 and 4,585.71

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Solution

The fourth proportional to 13,945.90, 20,919.52 and 4,585.71 is: 6,878.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,945.90 : 20,919.52 = 4,585.71 : x
  2. Step 2: Convert to fraction form
    13,945.90/20,919.52 = 4,585.71/x
  3. Step 3: Cross multiply
    13,945.90x = 20,919.52 × 4,585.71
  4. Step 4: Simplify right side
    13,945.90x = 95,930,766.58
  5. Step 5: Solve for x
    x = 95,930,766.58/13,945.90
  6. Step 6: Final answer
    x = 6,878.78

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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.