Home / 13,380.72-20,083.26-6,811.62

Finding the Fourth Proportional to 13,380.72, 20,083.26 and 6,811.62

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Solution

The fourth proportional to 13,380.72, 20,083.26 and 6,811.62 is: 10,223.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,380.72 : 20,083.26 = 6,811.62 : x
  2. Step 2: Convert to fraction form
    13,380.72/20,083.26 = 6,811.62/x
  3. Step 3: Cross multiply
    13,380.72x = 20,083.26 × 6,811.62
  4. Step 4: Simplify right side
    13,380.72x = 136,799,535.48
  5. Step 5: Solve for x
    x = 136,799,535.48/13,380.72
  6. Step 6: Final answer
    x = 10,223.63

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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.