Home / 12,947.25-19,418.94-4,180.98

Finding the Fourth Proportional to 12,947.25, 19,418.94 and 4,180.98

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Solution

The fourth proportional to 12,947.25, 19,418.94 and 4,180.98 is: 6,270.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,947.25 : 19,418.94 = 4,180.98 : x
  2. Step 2: Convert to fraction form
    12,947.25/19,418.94 = 4,180.98/x
  3. Step 3: Cross multiply
    12,947.25x = 19,418.94 × 4,180.98
  4. Step 4: Simplify right side
    12,947.25x = 81,190,199.76
  5. Step 5: Solve for x
    x = 81,190,199.76/12,947.25
  6. Step 6: Final answer
    x = 6,270.85

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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.