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Finding the Fourth Proportional to 28,676.80, 43,016.82 and 9,948.79

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Solution

The fourth proportional to 28,676.80, 43,016.82 and 9,948.79 is: 14,923.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,676.80 : 43,016.82 = 9,948.79 : x
  2. Step 2: Convert to fraction form
    28,676.80/43,016.82 = 9,948.79/x
  3. Step 3: Cross multiply
    28,676.80x = 43,016.82 × 9,948.79
  4. Step 4: Simplify right side
    28,676.80x = 427,965,308.65
  5. Step 5: Solve for x
    x = 427,965,308.65/28,676.80
  6. Step 6: Final answer
    x = 14,923.75

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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.