Home / 13,489.61-20,234.60-5,170.05

Finding the Fourth Proportional to 13,489.61, 20,234.60 and 5,170.05

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Solution

The fourth proportional to 13,489.61, 20,234.60 and 5,170.05 is: 7,755.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,489.61 : 20,234.60 = 5,170.05 : x
  2. Step 2: Convert to fraction form
    13,489.61/20,234.60 = 5,170.05/x
  3. Step 3: Cross multiply
    13,489.61x = 20,234.60 × 5,170.05
  4. Step 4: Simplify right side
    13,489.61x = 104,613,893.73
  5. Step 5: Solve for x
    x = 104,613,893.73/13,489.61
  6. Step 6: Final answer
    x = 7,755.15

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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.