Home / 20,558.19-30,804.48-12,218.43

Finding the Fourth Proportional to 20,558.19, 30,804.48 and 12,218.43

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Solution

The fourth proportional to 20,558.19, 30,804.48 and 12,218.43 is: 18,308.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,558.19 : 30,804.48 = 12,218.43 : x
  2. Step 2: Convert to fraction form
    20,558.19/30,804.48 = 12,218.43/x
  3. Step 3: Cross multiply
    20,558.19x = 30,804.48 × 12,218.43
  4. Step 4: Simplify right side
    20,558.19x = 376,382,382.57
  5. Step 5: Solve for x
    x = 376,382,382.57/20,558.19
  6. Step 6: Final answer
    x = 18,308.15

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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.