Home / 13,828.64-20,742.92-3,967.68

Finding the Fourth Proportional to 13,828.64, 20,742.92 and 3,967.68

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Solution

The fourth proportional to 13,828.64, 20,742.92 and 3,967.68 is: 5,951.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,828.64 : 20,742.92 = 3,967.68 : x
  2. Step 2: Convert to fraction form
    13,828.64/20,742.92 = 3,967.68/x
  3. Step 3: Cross multiply
    13,828.64x = 20,742.92 × 3,967.68
  4. Step 4: Simplify right side
    13,828.64x = 82,301,268.83
  5. Step 5: Solve for x
    x = 82,301,268.83/13,828.64
  6. Step 6: Final answer
    x = 5,951.51

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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.