Home / 18,922.08-28,380.60-5,072.16

Finding the Fourth Proportional to 18,922.08, 28,380.60 and 5,072.16

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Solution

The fourth proportional to 18,922.08, 28,380.60 and 5,072.16 is: 7,607.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,922.08 : 28,380.60 = 5,072.16 : x
  2. Step 2: Convert to fraction form
    18,922.08/28,380.60 = 5,072.16/x
  3. Step 3: Cross multiply
    18,922.08x = 28,380.60 × 5,072.16
  4. Step 4: Simplify right side
    18,922.08x = 143,950,944.10
  5. Step 5: Solve for x
    x = 143,950,944.10/18,922.08
  6. Step 6: Final answer
    x = 7,607.56

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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.