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Finding the Fourth Proportional to 11,789.93, 17,679.22 and 6,860.68

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Solution

The fourth proportional to 11,789.93, 17,679.22 and 6,860.68 is: 10,287.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,789.93 : 17,679.22 = 6,860.68 : x
  2. Step 2: Convert to fraction form
    11,789.93/17,679.22 = 6,860.68/x
  3. Step 3: Cross multiply
    11,789.93x = 17,679.22 × 6,860.68
  4. Step 4: Simplify right side
    11,789.93x = 121,291,471.07
  5. Step 5: Solve for x
    x = 121,291,471.07/11,789.93
  6. Step 6: Final answer
    x = 10,287.72

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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.