Home / 13,979.44-20,972.76-4,118.32

Finding the Fourth Proportional to 13,979.44, 20,972.76 and 4,118.32

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Solution

The fourth proportional to 13,979.44, 20,972.76 and 4,118.32 is: 6,178.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,979.44 : 20,972.76 = 4,118.32 : x
  2. Step 2: Convert to fraction form
    13,979.44/20,972.76 = 4,118.32/x
  3. Step 3: Cross multiply
    13,979.44x = 20,972.76 × 4,118.32
  4. Step 4: Simplify right side
    13,979.44x = 86,372,536.96
  5. Step 5: Solve for x
    x = 86,372,536.96/13,979.44
  6. Step 6: Final answer
    x = 6,178.54

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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.