Home / 13,500.32-20,249.11-3,640.60

Finding the Fourth Proportional to 13,500.32, 20,249.11 and 3,640.60

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Solution

The fourth proportional to 13,500.32, 20,249.11 and 3,640.60 is: 5,460.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,500.32 : 20,249.11 = 3,640.60 : x
  2. Step 2: Convert to fraction form
    13,500.32/20,249.11 = 3,640.60/x
  3. Step 3: Cross multiply
    13,500.32x = 20,249.11 × 3,640.60
  4. Step 4: Simplify right side
    13,500.32x = 73,718,836.07
  5. Step 5: Solve for x
    x = 73,718,836.07/13,500.32
  6. Step 6: Final answer
    x = 5,460.52

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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.