Home / 28,679.06-43,018.52-7,621.22

Finding the Fourth Proportional to 28,679.06, 43,018.52 and 7,621.22

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Solution

The fourth proportional to 28,679.06, 43,018.52 and 7,621.22 is: 11,431.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,679.06 : 43,018.52 = 7,621.22 : x
  2. Step 2: Convert to fraction form
    28,679.06/43,018.52 = 7,621.22/x
  3. Step 3: Cross multiply
    28,679.06x = 43,018.52 × 7,621.22
  4. Step 4: Simplify right side
    28,679.06x = 327,853,604.99
  5. Step 5: Solve for x
    x = 327,853,604.99/28,679.06
  6. Step 6: Final answer
    x = 11,431.81

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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.