Home / 19,202.80-28,805.60-6,721.44

Finding the Fourth Proportional to 19,202.80, 28,805.60 and 6,721.44

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Solution

The fourth proportional to 19,202.80, 28,805.60 and 6,721.44 is: 10,082.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,202.80 : 28,805.60 = 6,721.44 : x
  2. Step 2: Convert to fraction form
    19,202.80/28,805.60 = 6,721.44/x
  3. Step 3: Cross multiply
    19,202.80x = 28,805.60 × 6,721.44
  4. Step 4: Simplify right side
    19,202.80x = 193,615,112.06
  5. Step 5: Solve for x
    x = 193,615,112.06/19,202.80
  6. Step 6: Final answer
    x = 10,082.65

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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.