Home / 11,945.87-16,481.45-6,639.67

Finding the Fourth Proportional to 11,945.87, 16,481.45 and 6,639.67

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Solution

The fourth proportional to 11,945.87, 16,481.45 and 6,639.67 is: 9,160.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,945.87 : 16,481.45 = 6,639.67 : x
  2. Step 2: Convert to fraction form
    11,945.87/16,481.45 = 6,639.67/x
  3. Step 3: Cross multiply
    11,945.87x = 16,481.45 × 6,639.67
  4. Step 4: Simplify right side
    11,945.87x = 109,431,273.52
  5. Step 5: Solve for x
    x = 109,431,273.52/11,945.87
  6. Step 6: Final answer
    x = 9,160.59

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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.