Home / 12,021.20-18,004.91-6,949.17

Finding the Fourth Proportional to 12,021.20, 18,004.91 and 6,949.17

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Solution

The fourth proportional to 12,021.20, 18,004.91 and 6,949.17 is: 10,408.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,021.20 : 18,004.91 = 6,949.17 : x
  2. Step 2: Convert to fraction form
    12,021.20/18,004.91 = 6,949.17/x
  3. Step 3: Cross multiply
    12,021.20x = 18,004.91 × 6,949.17
  4. Step 4: Simplify right side
    12,021.20x = 125,119,145.68
  5. Step 5: Solve for x
    x = 125,119,145.68/12,021.20
  6. Step 6: Final answer
    x = 10,408.21

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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.