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Finding the Fourth Proportional to 12,670.95, 19,006.44 and 3,905.79

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Solution

The fourth proportional to 12,670.95, 19,006.44 and 3,905.79 is: 5,858.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,670.95 : 19,006.44 = 3,905.79 : x
  2. Step 2: Convert to fraction form
    12,670.95/19,006.44 = 3,905.79/x
  3. Step 3: Cross multiply
    12,670.95x = 19,006.44 × 3,905.79
  4. Step 4: Simplify right side
    12,670.95x = 74,235,163.29
  5. Step 5: Solve for x
    x = 74,235,163.29/12,670.95
  6. Step 6: Final answer
    x = 5,858.69

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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.