Home / 13,634.90-20,464.35-8,081.30

Finding the Fourth Proportional to 13,634.90, 20,464.35 and 8,081.30

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Solution

The fourth proportional to 13,634.90, 20,464.35 and 8,081.30 is: 12,129.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,634.90 : 20,464.35 = 8,081.30 : x
  2. Step 2: Convert to fraction form
    13,634.90/20,464.35 = 8,081.30/x
  3. Step 3: Cross multiply
    13,634.90x = 20,464.35 × 8,081.30
  4. Step 4: Simplify right side
    13,634.90x = 165,378,551.66
  5. Step 5: Solve for x
    x = 165,378,551.66/13,634.90
  6. Step 6: Final answer
    x = 12,129.06

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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.