Home / 13,721.74-20,583.72-3,861.81

Finding the Fourth Proportional to 13,721.74, 20,583.72 and 3,861.81

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Solution

The fourth proportional to 13,721.74, 20,583.72 and 3,861.81 is: 5,793.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,721.74 : 20,583.72 = 3,861.81 : x
  2. Step 2: Convert to fraction form
    13,721.74/20,583.72 = 3,861.81/x
  3. Step 3: Cross multiply
    13,721.74x = 20,583.72 × 3,861.81
  4. Step 4: Simplify right side
    13,721.74x = 79,490,415.73
  5. Step 5: Solve for x
    x = 79,490,415.73/13,721.74
  6. Step 6: Final answer
    x = 5,793.03

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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.