Home / 11,972.32-17,961.36-4,180.96

Finding the Fourth Proportional to 11,972.32, 17,961.36 and 4,180.96

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Solution

The fourth proportional to 11,972.32, 17,961.36 and 4,180.96 is: 6,272.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,972.32 : 17,961.36 = 4,180.96 : x
  2. Step 2: Convert to fraction form
    11,972.32/17,961.36 = 4,180.96/x
  3. Step 3: Cross multiply
    11,972.32x = 17,961.36 × 4,180.96
  4. Step 4: Simplify right side
    11,972.32x = 75,095,727.71
  5. Step 5: Solve for x
    x = 75,095,727.71/11,972.32
  6. Step 6: Final answer
    x = 6,272.45

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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.