Home / 11,972.40-17,958.60-4,181.28

Finding the Fourth Proportional to 11,972.40, 17,958.60 and 4,181.28

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Solution

The fourth proportional to 11,972.40, 17,958.60 and 4,181.28 is: 6,271.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,972.40 : 17,958.60 = 4,181.28 : x
  2. Step 2: Convert to fraction form
    11,972.40/17,958.60 = 4,181.28/x
  3. Step 3: Cross multiply
    11,972.40x = 17,958.60 × 4,181.28
  4. Step 4: Simplify right side
    11,972.40x = 75,089,935.01
  5. Step 5: Solve for x
    x = 75,089,935.01/11,972.40
  6. Step 6: Final answer
    x = 6,271.92

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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.