Home / 13,056.40-19,571.80-6,819.60

Finding the Fourth Proportional to 13,056.40, 19,571.80 and 6,819.60

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Solution

The fourth proportional to 13,056.40, 19,571.80 and 6,819.60 is: 10,222.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,056.40 : 19,571.80 = 6,819.60 : x
  2. Step 2: Convert to fraction form
    13,056.40/19,571.80 = 6,819.60/x
  3. Step 3: Cross multiply
    13,056.40x = 19,571.80 × 6,819.60
  4. Step 4: Simplify right side
    13,056.40x = 133,471,847.28
  5. Step 5: Solve for x
    x = 133,471,847.28/13,056.40
  6. Step 6: Final answer
    x = 10,222.71

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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.