Home / 19,212.63-28,821.93-8,119.37

Finding the Fourth Proportional to 19,212.63, 28,821.93 and 8,119.37

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Solution

The fourth proportional to 19,212.63, 28,821.93 and 8,119.37 is: 12,180.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,212.63 : 28,821.93 = 8,119.37 : x
  2. Step 2: Convert to fraction form
    19,212.63/28,821.93 = 8,119.37/x
  3. Step 3: Cross multiply
    19,212.63x = 28,821.93 × 8,119.37
  4. Step 4: Simplify right side
    19,212.63x = 234,015,729.08
  5. Step 5: Solve for x
    x = 234,015,729.08/19,212.63
  6. Step 6: Final answer
    x = 12,180.31

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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.