Home / 13,499.27-20,249.38-3,638.78

Finding the Fourth Proportional to 13,499.27, 20,249.38 and 3,638.78

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Solution

The fourth proportional to 13,499.27, 20,249.38 and 3,638.78 is: 5,458.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,499.27 : 20,249.38 = 3,638.78 : x
  2. Step 2: Convert to fraction form
    13,499.27/20,249.38 = 3,638.78/x
  3. Step 3: Cross multiply
    13,499.27x = 20,249.38 × 3,638.78
  4. Step 4: Simplify right side
    13,499.27x = 73,683,020.76
  5. Step 5: Solve for x
    x = 73,683,020.76/13,499.27
  6. Step 6: Final answer
    x = 5,458.30

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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.