Home / 12,015.09-18,017.15-3,692.21

Finding the Fourth Proportional to 12,015.09, 18,017.15 and 3,692.21

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Solution

The fourth proportional to 12,015.09, 18,017.15 and 3,692.21 is: 5,536.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,015.09 : 18,017.15 = 3,692.21 : x
  2. Step 2: Convert to fraction form
    12,015.09/18,017.15 = 3,692.21/x
  3. Step 3: Cross multiply
    12,015.09x = 18,017.15 × 3,692.21
  4. Step 4: Simplify right side
    12,015.09x = 66,522,992.85
  5. Step 5: Solve for x
    x = 66,522,992.85/12,015.09
  6. Step 6: Final answer
    x = 5,536.62

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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.