Home / 13,199.80-19,803.42-5,414.20

Finding the Fourth Proportional to 13,199.80, 19,803.42 and 5,414.20

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Solution

The fourth proportional to 13,199.80, 19,803.42 and 5,414.20 is: 8,122.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,199.80 : 19,803.42 = 5,414.20 : x
  2. Step 2: Convert to fraction form
    13,199.80/19,803.42 = 5,414.20/x
  3. Step 3: Cross multiply
    13,199.80x = 19,803.42 × 5,414.20
  4. Step 4: Simplify right side
    13,199.80x = 107,219,676.56
  5. Step 5: Solve for x
    x = 107,219,676.56/13,199.80
  6. Step 6: Final answer
    x = 8,122.83

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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.