Home / 14,986.87-20,680.82-8,271.42

Finding the Fourth Proportional to 14,986.87, 20,680.82 and 8,271.42

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Solution

The fourth proportional to 14,986.87, 20,680.82 and 8,271.42 is: 11,413.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,986.87 : 20,680.82 = 8,271.42 : x
  2. Step 2: Convert to fraction form
    14,986.87/20,680.82 = 8,271.42/x
  3. Step 3: Cross multiply
    14,986.87x = 20,680.82 × 8,271.42
  4. Step 4: Simplify right side
    14,986.87x = 171,059,660.27
  5. Step 5: Solve for x
    x = 171,059,660.27/14,986.87
  6. Step 6: Final answer
    x = 11,413.97

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.