Home / 13,876.45-20,781.57-8,015.29

Finding the Fourth Proportional to 13,876.45, 20,781.57 and 8,015.29

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Solution

The fourth proportional to 13,876.45, 20,781.57 and 8,015.29 is: 12,003.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,876.45 : 20,781.57 = 8,015.29 : x
  2. Step 2: Convert to fraction form
    13,876.45/20,781.57 = 8,015.29/x
  3. Step 3: Cross multiply
    13,876.45x = 20,781.57 × 8,015.29
  4. Step 4: Simplify right side
    13,876.45x = 166,570,310.21
  5. Step 5: Solve for x
    x = 166,570,310.21/13,876.45
  6. Step 6: Final answer
    x = 12,003.81

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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.