Home / 12,490.36-18,741.65-5,469.41

Finding the Fourth Proportional to 12,490.36, 18,741.65 and 5,469.41

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Solution

The fourth proportional to 12,490.36, 18,741.65 and 5,469.41 is: 8,206.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,490.36 : 18,741.65 = 5,469.41 : x
  2. Step 2: Convert to fraction form
    12,490.36/18,741.65 = 5,469.41/x
  3. Step 3: Cross multiply
    12,490.36x = 18,741.65 × 5,469.41
  4. Step 4: Simplify right side
    12,490.36x = 102,505,787.43
  5. Step 5: Solve for x
    x = 102,505,787.43/12,490.36
  6. Step 6: Final answer
    x = 8,206.79

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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.