Home / 12,020.80-18,069.94-11,147.34

Finding the Fourth Proportional to 12,020.80, 18,069.94 and 11,147.34

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Solution

The fourth proportional to 12,020.80, 18,069.94 and 11,147.34 is: 16,756.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,020.80 : 18,069.94 = 11,147.34 : x
  2. Step 2: Convert to fraction form
    12,020.80/18,069.94 = 11,147.34/x
  3. Step 3: Cross multiply
    12,020.80x = 18,069.94 × 11,147.34
  4. Step 4: Simplify right side
    12,020.80x = 201,431,764.96
  5. Step 5: Solve for x
    x = 201,431,764.96/12,020.80
  6. Step 6: Final answer
    x = 16,756.94

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1.5x scale

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.