Home / 13,634.30-20,451.38-3,639.02

Finding the Fourth Proportional to 13,634.30, 20,451.38 and 3,639.02

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Solution

The fourth proportional to 13,634.30, 20,451.38 and 3,639.02 is: 5,458.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,634.30 : 20,451.38 = 3,639.02 : x
  2. Step 2: Convert to fraction form
    13,634.30/20,451.38 = 3,639.02/x
  3. Step 3: Cross multiply
    13,634.30x = 20,451.38 × 3,639.02
  4. Step 4: Simplify right side
    13,634.30x = 74,422,980.85
  5. Step 5: Solve for x
    x = 74,422,980.85/13,634.30
  6. Step 6: Final answer
    x = 5,458.51

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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.