Home / 12,120.07-18,174.36-4,219.83

Finding the Fourth Proportional to 12,120.07, 18,174.36 and 4,219.83

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Solution

The fourth proportional to 12,120.07, 18,174.36 and 4,219.83 is: 6,327.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,120.07 : 18,174.36 = 4,219.83 : x
  2. Step 2: Convert to fraction form
    12,120.07/18,174.36 = 4,219.83/x
  3. Step 3: Cross multiply
    12,120.07x = 18,174.36 × 4,219.83
  4. Step 4: Simplify right side
    12,120.07x = 76,692,709.56
  5. Step 5: Solve for x
    x = 76,692,709.56/12,120.07
  6. Step 6: Final answer
    x = 6,327.74

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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.