Home / 12,004.20-18,004.68-4,212

Finding the Fourth Proportional to 12,004.20, 18,004.68 and 4,212

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Solution

The fourth proportional to 12,004.20, 18,004.68 and 4,212 is: 6,317.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,004.20 : 18,004.68 = 4,212 : x
  2. Step 2: Convert to fraction form
    12,004.20/18,004.68 = 4,212/x
  3. Step 3: Cross multiply
    12,004.20x = 18,004.68 × 4,212
  4. Step 4: Simplify right side
    12,004.20x = 75,835,712.16
  5. Step 5: Solve for x
    x = 75,835,712.16/12,004.20
  6. Step 6: Final answer
    x = 6,317.43

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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.