Home / 13,768.71-20,653.86-3,907.22

Finding the Fourth Proportional to 13,768.71, 20,653.86 and 3,907.22

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Solution

The fourth proportional to 13,768.71, 20,653.86 and 3,907.22 is: 5,861.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,768.71 : 20,653.86 = 3,907.22 : x
  2. Step 2: Convert to fraction form
    13,768.71/20,653.86 = 3,907.22/x
  3. Step 3: Cross multiply
    13,768.71x = 20,653.86 × 3,907.22
  4. Step 4: Simplify right side
    13,768.71x = 80,699,071.60
  5. Step 5: Solve for x
    x = 80,699,071.60/13,768.71
  6. Step 6: Final answer
    x = 5,861.05

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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.