Home / 12,424.96-18,638.70-4,105

Finding the Fourth Proportional to 12,424.96, 18,638.70 and 4,105

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Solution

The fourth proportional to 12,424.96, 18,638.70 and 4,105 is: 6,157.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,424.96 : 18,638.70 = 4,105 : x
  2. Step 2: Convert to fraction form
    12,424.96/18,638.70 = 4,105/x
  3. Step 3: Cross multiply
    12,424.96x = 18,638.70 × 4,105
  4. Step 4: Simplify right side
    12,424.96x = 76,511,863.50
  5. Step 5: Solve for x
    x = 76,511,863.50/12,424.96
  6. Step 6: Final answer
    x = 6,157.92

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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.