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Finding the Fourth Proportional to 28,469.41, 42,699.74 and 9,494.38

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Solution

The fourth proportional to 28,469.41, 42,699.74 and 9,494.38 is: 14,240.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,469.41 : 42,699.74 = 9,494.38 : x
  2. Step 2: Convert to fraction form
    28,469.41/42,699.74 = 9,494.38/x
  3. Step 3: Cross multiply
    28,469.41x = 42,699.74 × 9,494.38
  4. Step 4: Simplify right side
    28,469.41x = 405,407,511.12
  5. Step 5: Solve for x
    x = 405,407,511.12/28,469.41
  6. Step 6: Final answer
    x = 14,240.11

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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.