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Finding the Fourth Proportional to 12,234.96, 18,337.20 and 4,435.20

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Solution

The fourth proportional to 12,234.96, 18,337.20 and 4,435.20 is: 6,647.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,234.96 : 18,337.20 = 4,435.20 : x
  2. Step 2: Convert to fraction form
    12,234.96/18,337.20 = 4,435.20/x
  3. Step 3: Cross multiply
    12,234.96x = 18,337.20 × 4,435.20
  4. Step 4: Simplify right side
    12,234.96x = 81,329,149.44
  5. Step 5: Solve for x
    x = 81,329,149.44/12,234.96
  6. Step 6: Final answer
    x = 6,647.28

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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.