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Finding the Fourth Proportional to 12,307, 18,460.50 and 4,099

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Solution

The fourth proportional to 12,307, 18,460.50 and 4,099 is: 6,148.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,307 : 18,460.50 = 4,099 : x
  2. Step 2: Convert to fraction form
    12,307/18,460.50 = 4,099/x
  3. Step 3: Cross multiply
    12,307x = 18,460.50 × 4,099
  4. Step 4: Simplify right side
    12,307x = 75,669,589.50
  5. Step 5: Solve for x
    x = 75,669,589.50/12,307
  6. Step 6: Final answer
    x = 6,148.50

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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.