Home / 13,635.64-20,451.06-3,640.51

Finding the Fourth Proportional to 13,635.64, 20,451.06 and 3,640.51

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Solution

The fourth proportional to 13,635.64, 20,451.06 and 3,640.51 is: 5,460.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,635.64 : 20,451.06 = 3,640.51 : x
  2. Step 2: Convert to fraction form
    13,635.64/20,451.06 = 3,640.51/x
  3. Step 3: Cross multiply
    13,635.64x = 20,451.06 × 3,640.51
  4. Step 4: Simplify right side
    13,635.64x = 74,452,288.44
  5. Step 5: Solve for x
    x = 74,452,288.44/13,635.64
  6. Step 6: Final answer
    x = 5,460.12

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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.