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Finding the Fourth Proportional to 18,469.22, 27,710.66 and 13,245.93

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Solution

The fourth proportional to 18,469.22, 27,710.66 and 13,245.93 is: 19,873.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,469.22 : 27,710.66 = 13,245.93 : x
  2. Step 2: Convert to fraction form
    18,469.22/27,710.66 = 13,245.93/x
  3. Step 3: Cross multiply
    18,469.22x = 27,710.66 × 13,245.93
  4. Step 4: Simplify right side
    18,469.22x = 367,053,421.22
  5. Step 5: Solve for x
    x = 367,053,421.22/18,469.22
  6. Step 6: Final answer
    x = 19,873.80

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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.