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Finding the Fourth Proportional to 11,958.34, 17,930.04 and 10,412.86

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Solution

The fourth proportional to 11,958.34, 17,930.04 and 10,412.86 is: 15,612.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,958.34 : 17,930.04 = 10,412.86 : x
  2. Step 2: Convert to fraction form
    11,958.34/17,930.04 = 10,412.86/x
  3. Step 3: Cross multiply
    11,958.34x = 17,930.04 × 10,412.86
  4. Step 4: Simplify right side
    11,958.34x = 186,702,996.31
  5. Step 5: Solve for x
    x = 186,702,996.31/11,958.34
  6. Step 6: Final answer
    x = 15,612.79

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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.