Home / 13,530.30-20,268.45-11,906.70

Finding the Fourth Proportional to 13,530.30, 20,268.45 and 11,906.70

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Solution

The fourth proportional to 13,530.30, 20,268.45 and 11,906.70 is: 17,836.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,530.30 : 20,268.45 = 11,906.70 : x
  2. Step 2: Convert to fraction form
    13,530.30/20,268.45 = 11,906.70/x
  3. Step 3: Cross multiply
    13,530.30x = 20,268.45 × 11,906.70
  4. Step 4: Simplify right side
    13,530.30x = 241,330,353.62
  5. Step 5: Solve for x
    x = 241,330,353.62/13,530.30
  6. Step 6: Final answer
    x = 17,836.29

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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.