Home / 13,181.68-18,190.56-7,213.27

Finding the Fourth Proportional to 13,181.68, 18,190.56 and 7,213.27

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Solution

The fourth proportional to 13,181.68, 18,190.56 and 7,213.27 is: 9,954.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,181.68 : 18,190.56 = 7,213.27 : x
  2. Step 2: Convert to fraction form
    13,181.68/18,190.56 = 7,213.27/x
  3. Step 3: Cross multiply
    13,181.68x = 18,190.56 × 7,213.27
  4. Step 4: Simplify right side
    13,181.68x = 131,213,420.73
  5. Step 5: Solve for x
    x = 131,213,420.73/13,181.68
  6. Step 6: Final answer
    x = 9,954.23

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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.