Home / 15,618.38-21,553.36-8,544.85

Finding the Fourth Proportional to 15,618.38, 21,553.36 and 8,544.85

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Solution

The fourth proportional to 15,618.38, 21,553.36 and 8,544.85 is: 11,791.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,618.38 : 21,553.36 = 8,544.85 : x
  2. Step 2: Convert to fraction form
    15,618.38/21,553.36 = 8,544.85/x
  3. Step 3: Cross multiply
    15,618.38x = 21,553.36 × 8,544.85
  4. Step 4: Simplify right side
    15,618.38x = 184,170,185.47
  5. Step 5: Solve for x
    x = 184,170,185.47/15,618.38
  6. Step 6: Final answer
    x = 11,791.89

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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.