Home / 12,021.25-18,034.20-3,699.79

Finding the Fourth Proportional to 12,021.25, 18,034.20 and 3,699.79

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Solution

The fourth proportional to 12,021.25, 18,034.20 and 3,699.79 is: 5,550.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,021.25 : 18,034.20 = 3,699.79 : x
  2. Step 2: Convert to fraction form
    12,021.25/18,034.20 = 3,699.79/x
  3. Step 3: Cross multiply
    12,021.25x = 18,034.20 × 3,699.79
  4. Step 4: Simplify right side
    12,021.25x = 66,722,752.82
  5. Step 5: Solve for x
    x = 66,722,752.82/12,021.25
  6. Step 6: Final answer
    x = 5,550.40

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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.