Home / 13,808.12-20,712.06-9,149

Finding the Fourth Proportional to 13,808.12, 20,712.06 and 9,149

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Solution

The fourth proportional to 13,808.12, 20,712.06 and 9,149 is: 13,723.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,808.12 : 20,712.06 = 9,149 : x
  2. Step 2: Convert to fraction form
    13,808.12/20,712.06 = 9,149/x
  3. Step 3: Cross multiply
    13,808.12x = 20,712.06 × 9,149
  4. Step 4: Simplify right side
    13,808.12x = 189,494,636.94
  5. Step 5: Solve for x
    x = 189,494,636.94/13,808.12
  6. Step 6: Final answer
    x = 13,723.42

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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.