Home / 11,912.71-17,856.46-4,007.70

Finding the Fourth Proportional to 11,912.71, 17,856.46 and 4,007.70

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Solution

The fourth proportional to 11,912.71, 17,856.46 and 4,007.70 is: 6,007.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,912.71 : 17,856.46 = 4,007.70 : x
  2. Step 2: Convert to fraction form
    11,912.71/17,856.46 = 4,007.70/x
  3. Step 3: Cross multiply
    11,912.71x = 17,856.46 × 4,007.70
  4. Step 4: Simplify right side
    11,912.71x = 71,563,334.74
  5. Step 5: Solve for x
    x = 71,563,334.74/11,912.71
  6. Step 6: Final answer
    x = 6,007.31

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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.