Home / 11,791.20-17,668.98-7,888.62

Finding the Fourth Proportional to 11,791.20, 17,668.98 and 7,888.62

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Solution

The fourth proportional to 11,791.20, 17,668.98 and 7,888.62 is: 11,821.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,791.20 : 17,668.98 = 7,888.62 : x
  2. Step 2: Convert to fraction form
    11,791.20/17,668.98 = 7,888.62/x
  3. Step 3: Cross multiply
    11,791.20x = 17,668.98 × 7,888.62
  4. Step 4: Simplify right side
    11,791.20x = 139,383,869.01
  5. Step 5: Solve for x
    x = 139,383,869.01/11,791.20
  6. Step 6: Final answer
    x = 11,821.01

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1.5x scale

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.