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Finding the Fourth Proportional to 12,374.80, 18,558.60 and 6,830.80

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Solution

The fourth proportional to 12,374.80, 18,558.60 and 6,830.80 is: 10,244.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,374.80 : 18,558.60 = 6,830.80 : x
  2. Step 2: Convert to fraction form
    12,374.80/18,558.60 = 6,830.80/x
  3. Step 3: Cross multiply
    12,374.80x = 18,558.60 × 6,830.80
  4. Step 4: Simplify right side
    12,374.80x = 126,770,084.88
  5. Step 5: Solve for x
    x = 126,770,084.88/12,374.80
  6. Step 6: Final answer
    x = 10,244.21

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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.