Home / 18,905.73-28,362.72-5,757.77

Finding the Fourth Proportional to 18,905.73, 28,362.72 and 5,757.77

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Solution

The fourth proportional to 18,905.73, 28,362.72 and 5,757.77 is: 8,637.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,905.73 : 28,362.72 = 5,757.77 : x
  2. Step 2: Convert to fraction form
    18,905.73/28,362.72 = 5,757.77/x
  3. Step 3: Cross multiply
    18,905.73x = 28,362.72 × 5,757.77
  4. Step 4: Simplify right side
    18,905.73x = 163,305,876.52
  5. Step 5: Solve for x
    x = 163,305,876.52/18,905.73
  6. Step 6: Final answer
    x = 8,637.90

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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.