Home / 13,181.99-18,190.31-7,213.73

Finding the Fourth Proportional to 13,181.99, 18,190.31 and 7,213.73

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Solution

The fourth proportional to 13,181.99, 18,190.31 and 7,213.73 is: 9,954.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,181.99 : 18,190.31 = 7,213.73 : x
  2. Step 2: Convert to fraction form
    13,181.99/18,190.31 = 7,213.73/x
  3. Step 3: Cross multiply
    13,181.99x = 18,190.31 × 7,213.73
  4. Step 4: Simplify right side
    13,181.99x = 131,219,857.94
  5. Step 5: Solve for x
    x = 131,219,857.94/13,181.99
  6. Step 6: Final answer
    x = 9,954.48

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.