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Finding the Fourth Proportional to 13,919.96, 20,879.94 and 6,527.90

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Solution

The fourth proportional to 13,919.96, 20,879.94 and 6,527.90 is: 9,791.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,919.96 : 20,879.94 = 6,527.90 : x
  2. Step 2: Convert to fraction form
    13,919.96/20,879.94 = 6,527.90/x
  3. Step 3: Cross multiply
    13,919.96x = 20,879.94 × 6,527.90
  4. Step 4: Simplify right side
    13,919.96x = 136,302,160.33
  5. Step 5: Solve for x
    x = 136,302,160.33/13,919.96
  6. Step 6: Final answer
    x = 9,791.85

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1.5x scale

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.