Home / 12,077.09-18,115.75-3,311.99

Finding the Fourth Proportional to 12,077.09, 18,115.75 and 3,311.99

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Solution

The fourth proportional to 12,077.09, 18,115.75 and 3,311.99 is: 4,968.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,077.09 : 18,115.75 = 3,311.99 : x
  2. Step 2: Convert to fraction form
    12,077.09/18,115.75 = 3,311.99/x
  3. Step 3: Cross multiply
    12,077.09x = 18,115.75 × 3,311.99
  4. Step 4: Simplify right side
    12,077.09x = 59,999,219.85
  5. Step 5: Solve for x
    x = 59,999,219.85/12,077.09
  6. Step 6: Final answer
    x = 4,968.02

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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.