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Finding the Fourth Proportional to 12,220.34, 18,325.95 and 4,822.34

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Solution

The fourth proportional to 12,220.34, 18,325.95 and 4,822.34 is: 7,231.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,220.34 : 18,325.95 = 4,822.34 : x
  2. Step 2: Convert to fraction form
    12,220.34/18,325.95 = 4,822.34/x
  3. Step 3: Cross multiply
    12,220.34x = 18,325.95 × 4,822.34
  4. Step 4: Simplify right side
    12,220.34x = 88,373,961.72
  5. Step 5: Solve for x
    x = 88,373,961.72/12,220.34
  6. Step 6: Final answer
    x = 7,231.71

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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.