Home / 13,500.36-20,249.10-3,640.65

Finding the Fourth Proportional to 13,500.36, 20,249.10 and 3,640.65

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Solution

The fourth proportional to 13,500.36, 20,249.10 and 3,640.65 is: 5,460.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,500.36 : 20,249.10 = 3,640.65 : x
  2. Step 2: Convert to fraction form
    13,500.36/20,249.10 = 3,640.65/x
  3. Step 3: Cross multiply
    13,500.36x = 20,249.10 × 3,640.65
  4. Step 4: Simplify right side
    13,500.36x = 73,719,885.92
  5. Step 5: Solve for x
    x = 73,719,885.92/13,500.36
  6. Step 6: Final answer
    x = 5,460.59

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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.