Home / 11,177.55-15,428.49-7,198.65

Finding the Fourth Proportional to 11,177.55, 15,428.49 and 7,198.65

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Solution

The fourth proportional to 11,177.55, 15,428.49 and 7,198.65 is: 9,936.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,177.55 : 15,428.49 = 7,198.65 : x
  2. Step 2: Convert to fraction form
    11,177.55/15,428.49 = 7,198.65/x
  3. Step 3: Cross multiply
    11,177.55x = 15,428.49 × 7,198.65
  4. Step 4: Simplify right side
    11,177.55x = 111,064,299.54
  5. Step 5: Solve for x
    x = 111,064,299.54/11,177.55
  6. Step 6: Final answer
    x = 9,936.37

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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.