Home / 12,021.57-18,023.85-4,120.29

Finding the Fourth Proportional to 12,021.57, 18,023.85 and 4,120.29

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Solution

The fourth proportional to 12,021.57, 18,023.85 and 4,120.29 is: 6,177.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,021.57 : 18,023.85 = 4,120.29 : x
  2. Step 2: Convert to fraction form
    12,021.57/18,023.85 = 4,120.29/x
  3. Step 3: Cross multiply
    12,021.57x = 18,023.85 × 4,120.29
  4. Step 4: Simplify right side
    12,021.57x = 74,263,488.92
  5. Step 5: Solve for x
    x = 74,263,488.92/12,021.57
  6. Step 6: Final answer
    x = 6,177.52

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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.