Home / 13,634.64-20,449.56-3,639.51

Finding the Fourth Proportional to 13,634.64, 20,449.56 and 3,639.51

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Solution

The fourth proportional to 13,634.64, 20,449.56 and 3,639.51 is: 5,458.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,634.64 : 20,449.56 = 3,639.51 : x
  2. Step 2: Convert to fraction form
    13,634.64/20,449.56 = 3,639.51/x
  3. Step 3: Cross multiply
    13,634.64x = 20,449.56 × 3,639.51
  4. Step 4: Simplify right side
    13,634.64x = 74,426,378.12
  5. Step 5: Solve for x
    x = 74,426,378.12/13,634.64
  6. Step 6: Final answer
    x = 5,458.62

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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.