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Finding the Fourth Proportional to 18,558, 25,610.12 and 11,106

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Solution

The fourth proportional to 18,558, 25,610.12 and 11,106 is: 15,326.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,558 : 25,610.12 = 11,106 : x
  2. Step 2: Convert to fraction form
    18,558/25,610.12 = 11,106/x
  3. Step 3: Cross multiply
    18,558x = 25,610.12 × 11,106
  4. Step 4: Simplify right side
    18,558x = 284,425,992.72
  5. Step 5: Solve for x
    x = 284,425,992.72/18,558
  6. Step 6: Final answer
    x = 15,326.33

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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.