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Finding the Fourth Proportional to 16,668.78, 25,010.46 and 7,310.88

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Solution

The fourth proportional to 16,668.78, 25,010.46 and 7,310.88 is: 10,969.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,668.78 : 25,010.46 = 7,310.88 : x
  2. Step 2: Convert to fraction form
    16,668.78/25,010.46 = 7,310.88/x
  3. Step 3: Cross multiply
    16,668.78x = 25,010.46 × 7,310.88
  4. Step 4: Simplify right side
    16,668.78x = 182,848,471.80
  5. Step 5: Solve for x
    x = 182,848,471.80/16,668.78
  6. Step 6: Final answer
    x = 10,969.52

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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.