Home / 12,228.21-18,339.75-3,460.77

Finding the Fourth Proportional to 12,228.21, 18,339.75 and 3,460.77

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Solution

The fourth proportional to 12,228.21, 18,339.75 and 3,460.77 is: 5,190.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,228.21 : 18,339.75 = 3,460.77 : x
  2. Step 2: Convert to fraction form
    12,228.21/18,339.75 = 3,460.77/x
  3. Step 3: Cross multiply
    12,228.21x = 18,339.75 × 3,460.77
  4. Step 4: Simplify right side
    12,228.21x = 63,469,656.61
  5. Step 5: Solve for x
    x = 63,469,656.61/12,228.21
  6. Step 6: Final answer
    x = 5,190.43

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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.