Home / 12,215.85-18,325.37-3,450.99

Finding the Fourth Proportional to 12,215.85, 18,325.37 and 3,450.99

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Solution

The fourth proportional to 12,215.85, 18,325.37 and 3,450.99 is: 5,176.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,215.85 : 18,325.37 = 3,450.99 : x
  2. Step 2: Convert to fraction form
    12,215.85/18,325.37 = 3,450.99/x
  3. Step 3: Cross multiply
    12,215.85x = 18,325.37 × 3,450.99
  4. Step 4: Simplify right side
    12,215.85x = 63,240,668.62
  5. Step 5: Solve for x
    x = 63,240,668.62/12,215.85
  6. Step 6: Final answer
    x = 5,176.94

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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.