Home / 12,418.31-18,628.38-4,097.99

Finding the Fourth Proportional to 12,418.31, 18,628.38 and 4,097.99

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Solution

The fourth proportional to 12,418.31, 18,628.38 and 4,097.99 is: 6,147.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,418.31 : 18,628.38 = 4,097.99 : x
  2. Step 2: Convert to fraction form
    12,418.31/18,628.38 = 4,097.99/x
  3. Step 3: Cross multiply
    12,418.31x = 18,628.38 × 4,097.99
  4. Step 4: Simplify right side
    12,418.31x = 76,338,961.53
  5. Step 5: Solve for x
    x = 76,338,961.53/12,418.31
  6. Step 6: Final answer
    x = 6,147.29

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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.