Home / 12,968.60-19,431.30-8,583.80

Finding the Fourth Proportional to 12,968.60, 19,431.30 and 8,583.80

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Solution

The fourth proportional to 12,968.60, 19,431.30 and 8,583.80 is: 12,861.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,968.60 : 19,431.30 = 8,583.80 : x
  2. Step 2: Convert to fraction form
    12,968.60/19,431.30 = 8,583.80/x
  3. Step 3: Cross multiply
    12,968.60x = 19,431.30 × 8,583.80
  4. Step 4: Simplify right side
    12,968.60x = 166,794,392.94
  5. Step 5: Solve for x
    x = 166,794,392.94/12,968.60
  6. Step 6: Final answer
    x = 12,861.40

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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.