Home / 18,930.35-28,401.44-7,842.26

Finding the Fourth Proportional to 18,930.35, 28,401.44 and 7,842.26

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Solution

The fourth proportional to 18,930.35, 28,401.44 and 7,842.26 is: 11,765.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,930.35 : 28,401.44 = 7,842.26 : x
  2. Step 2: Convert to fraction form
    18,930.35/28,401.44 = 7,842.26/x
  3. Step 3: Cross multiply
    18,930.35x = 28,401.44 × 7,842.26
  4. Step 4: Simplify right side
    18,930.35x = 222,731,508.65
  5. Step 5: Solve for x
    x = 222,731,508.65/18,930.35
  6. Step 6: Final answer
    x = 11,765.84

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1.5x scale

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.