Home / 13,679.33-20,519.01-3,818.87

Finding the Fourth Proportional to 13,679.33, 20,519.01 and 3,818.87

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Solution

The fourth proportional to 13,679.33, 20,519.01 and 3,818.87 is: 5,728.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,679.33 : 20,519.01 = 3,818.87 : x
  2. Step 2: Convert to fraction form
    13,679.33/20,519.01 = 3,818.87/x
  3. Step 3: Cross multiply
    13,679.33x = 20,519.01 × 3,818.87
  4. Step 4: Simplify right side
    13,679.33x = 78,359,329.12
  5. Step 5: Solve for x
    x = 78,359,329.12/13,679.33
  6. Step 6: Final answer
    x = 5,728.30

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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.