Home / 13,185.42-18,195.92-7,217.48

Finding the Fourth Proportional to 13,185.42, 18,195.92 and 7,217.48

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Solution

The fourth proportional to 13,185.42, 18,195.92 and 7,217.48 is: 9,960.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,185.42 : 18,195.92 = 7,217.48 : x
  2. Step 2: Convert to fraction form
    13,185.42/18,195.92 = 7,217.48/x
  3. Step 3: Cross multiply
    13,185.42x = 18,195.92 × 7,217.48
  4. Step 4: Simplify right side
    13,185.42x = 131,328,688.68
  5. Step 5: Solve for x
    x = 131,328,688.68/13,185.42
  6. Step 6: Final answer
    x = 9,960.14

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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.