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Finding the Fourth Proportional to 30,374.70, 45,540.43 and 11,638.89

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Solution

The fourth proportional to 30,374.70, 45,540.43 and 11,638.89 is: 17,450.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,374.70 : 45,540.43 = 11,638.89 : x
  2. Step 2: Convert to fraction form
    30,374.70/45,540.43 = 11,638.89/x
  3. Step 3: Cross multiply
    30,374.70x = 45,540.43 × 11,638.89
  4. Step 4: Simplify right side
    30,374.70x = 530,040,240.65
  5. Step 5: Solve for x
    x = 530,040,240.65/30,374.70
  6. Step 6: Final answer
    x = 17,450.06

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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.