Home / 12,260.03-18,390.04-3,940.72

Finding the Fourth Proportional to 12,260.03, 18,390.04 and 3,940.72

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Solution

The fourth proportional to 12,260.03, 18,390.04 and 3,940.72 is: 5,911.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,260.03 : 18,390.04 = 3,940.72 : x
  2. Step 2: Convert to fraction form
    12,260.03/18,390.04 = 3,940.72/x
  3. Step 3: Cross multiply
    12,260.03x = 18,390.04 × 3,940.72
  4. Step 4: Simplify right side
    12,260.03x = 72,469,998.43
  5. Step 5: Solve for x
    x = 72,469,998.43/12,260.03
  6. Step 6: Final answer
    x = 5,911.08

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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.