Home / 13,842.63-20,761.70-3,979.67

Finding the Fourth Proportional to 13,842.63, 20,761.70 and 3,979.67

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Solution

The fourth proportional to 13,842.63, 20,761.70 and 3,979.67 is: 5,968.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,842.63 : 20,761.70 = 3,979.67 : x
  2. Step 2: Convert to fraction form
    13,842.63/20,761.70 = 3,979.67/x
  3. Step 3: Cross multiply
    13,842.63x = 20,761.70 × 3,979.67
  4. Step 4: Simplify right side
    13,842.63x = 82,624,590.93
  5. Step 5: Solve for x
    x = 82,624,590.93/13,842.63
  6. Step 6: Final answer
    x = 5,968.85

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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.