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Finding the Fourth Proportional to 12,606, 18,907.32 and 4,285.68

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Solution

The fourth proportional to 12,606, 18,907.32 and 4,285.68 is: 6,427.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,606 : 18,907.32 = 4,285.68 : x
  2. Step 2: Convert to fraction form
    12,606/18,907.32 = 4,285.68/x
  3. Step 3: Cross multiply
    12,606x = 18,907.32 × 4,285.68
  4. Step 4: Simplify right side
    12,606x = 81,030,723.18
  5. Step 5: Solve for x
    x = 81,030,723.18/12,606
  6. Step 6: Final answer
    x = 6,427.95

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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.