Home / 13,986.93-20,980.18-3,456.95

Finding the Fourth Proportional to 13,986.93, 20,980.18 and 3,456.95

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Solution

The fourth proportional to 13,986.93, 20,980.18 and 3,456.95 is: 5,185.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,986.93 : 20,980.18 = 3,456.95 : x
  2. Step 2: Convert to fraction form
    13,986.93/20,980.18 = 3,456.95/x
  3. Step 3: Cross multiply
    13,986.93x = 20,980.18 × 3,456.95
  4. Step 4: Simplify right side
    13,986.93x = 72,527,406.88
  5. Step 5: Solve for x
    x = 72,527,406.88/13,986.93
  6. Step 6: Final answer
    x = 5,185.37

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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.