Home / 13,508.36-20,196-11,451.40

Finding the Fourth Proportional to 13,508.36, 20,196 and 11,451.40

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Solution

The fourth proportional to 13,508.36, 20,196 and 11,451.40 is: 17,120.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,508.36 : 20,196 = 11,451.40 : x
  2. Step 2: Convert to fraction form
    13,508.36/20,196 = 11,451.40/x
  3. Step 3: Cross multiply
    13,508.36x = 20,196 × 11,451.40
  4. Step 4: Simplify right side
    13,508.36x = 231,272,474.40
  5. Step 5: Solve for x
    x = 231,272,474.40/13,508.36
  6. Step 6: Final answer
    x = 17,120.69

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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.