Home / 10,380.60-15,583.20-8,190.84

Finding the Fourth Proportional to 10,380.60, 15,583.20 and 8,190.84

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Solution

The fourth proportional to 10,380.60, 15,583.20 and 8,190.84 is: 12,295.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,380.60 : 15,583.20 = 8,190.84 : x
  2. Step 2: Convert to fraction form
    10,380.60/15,583.20 = 8,190.84/x
  3. Step 3: Cross multiply
    10,380.60x = 15,583.20 × 8,190.84
  4. Step 4: Simplify right side
    10,380.60x = 127,639,497.89
  5. Step 5: Solve for x
    x = 127,639,497.89/10,380.60
  6. Step 6: Final answer
    x = 12,295.97

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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.