Home / 13,196.92-18,211.10-7,228.62

Finding the Fourth Proportional to 13,196.92, 18,211.10 and 7,228.62

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Solution

The fourth proportional to 13,196.92, 18,211.10 and 7,228.62 is: 9,975.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,196.92 : 18,211.10 = 7,228.62 : x
  2. Step 2: Convert to fraction form
    13,196.92/18,211.10 = 7,228.62/x
  3. Step 3: Cross multiply
    13,196.92x = 18,211.10 × 7,228.62
  4. Step 4: Simplify right side
    13,196.92x = 131,641,121.68
  5. Step 5: Solve for x
    x = 131,641,121.68/13,196.92
  6. Step 6: Final answer
    x = 9,975.14

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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.