Home / 13,917.42-20,882.82-6,520.68

Finding the Fourth Proportional to 13,917.42, 20,882.82 and 6,520.68

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Solution

The fourth proportional to 13,917.42, 20,882.82 and 6,520.68 is: 9,784.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,917.42 : 20,882.82 = 6,520.68 : x
  2. Step 2: Convert to fraction form
    13,917.42/20,882.82 = 6,520.68/x
  3. Step 3: Cross multiply
    13,917.42x = 20,882.82 × 6,520.68
  4. Step 4: Simplify right side
    13,917.42x = 136,170,186.72
  5. Step 5: Solve for x
    x = 136,170,186.72/13,917.42
  6. Step 6: Final answer
    x = 9,784.15

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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.