Home / 27,490.80-41,229.60-7,771.20

Finding the Fourth Proportional to 27,490.80, 41,229.60 and 7,771.20

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Solution

The fourth proportional to 27,490.80, 41,229.60 and 7,771.20 is: 11,654.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,490.80 : 41,229.60 = 7,771.20 : x
  2. Step 2: Convert to fraction form
    27,490.80/41,229.60 = 7,771.20/x
  3. Step 3: Cross multiply
    27,490.80x = 41,229.60 × 7,771.20
  4. Step 4: Simplify right side
    27,490.80x = 320,403,467.52
  5. Step 5: Solve for x
    x = 320,403,467.52/27,490.80
  6. Step 6: Final answer
    x = 11,654.93

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.