Home / 12,270.42-18,408.06-4,478.22

Finding the Fourth Proportional to 12,270.42, 18,408.06 and 4,478.22

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Solution

The fourth proportional to 12,270.42, 18,408.06 and 4,478.22 is: 6,718.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,270.42 : 18,408.06 = 4,478.22 : x
  2. Step 2: Convert to fraction form
    12,270.42/18,408.06 = 4,478.22/x
  3. Step 3: Cross multiply
    12,270.42x = 18,408.06 × 4,478.22
  4. Step 4: Simplify right side
    12,270.42x = 82,435,342.45
  5. Step 5: Solve for x
    x = 82,435,342.45/12,270.42
  6. Step 6: Final answer
    x = 6,718.22

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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.