Home / 10,504.60-15,771.30-8,315.80

Finding the Fourth Proportional to 10,504.60, 15,771.30 and 8,315.80

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Solution

The fourth proportional to 10,504.60, 15,771.30 and 8,315.80 is: 12,485.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,504.60 : 15,771.30 = 8,315.80 : x
  2. Step 2: Convert to fraction form
    10,504.60/15,771.30 = 8,315.80/x
  3. Step 3: Cross multiply
    10,504.60x = 15,771.30 × 8,315.80
  4. Step 4: Simplify right side
    10,504.60x = 131,150,976.54
  5. Step 5: Solve for x
    x = 131,150,976.54/10,504.60
  6. Step 6: Final answer
    x = 12,485.10

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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.