Home / 18,640.96-27,962.31-5,314.86

Finding the Fourth Proportional to 18,640.96, 27,962.31 and 5,314.86

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Solution

The fourth proportional to 18,640.96, 27,962.31 and 5,314.86 is: 7,972.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,640.96 : 27,962.31 = 5,314.86 : x
  2. Step 2: Convert to fraction form
    18,640.96/27,962.31 = 5,314.86/x
  3. Step 3: Cross multiply
    18,640.96x = 27,962.31 × 5,314.86
  4. Step 4: Simplify right side
    18,640.96x = 148,615,832.83
  5. Step 5: Solve for x
    x = 148,615,832.83/18,640.96
  6. Step 6: Final answer
    x = 7,972.54

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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.