Home / 11,181.45-15,414.14-7,813.81

Finding the Fourth Proportional to 11,181.45, 15,414.14 and 7,813.81

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Solution

The fourth proportional to 11,181.45, 15,414.14 and 7,813.81 is: 10,771.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,181.45 : 15,414.14 = 7,813.81 : x
  2. Step 2: Convert to fraction form
    11,181.45/15,414.14 = 7,813.81/x
  3. Step 3: Cross multiply
    11,181.45x = 15,414.14 × 7,813.81
  4. Step 4: Simplify right side
    11,181.45x = 120,443,161.27
  5. Step 5: Solve for x
    x = 120,443,161.27/11,181.45
  6. Step 6: Final answer
    x = 10,771.69

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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.