Home / 8,520.60-12,763.87-6,768.57

Finding the Fourth Proportional to 8,520.60, 12,763.87 and 6,768.57

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Solution

The fourth proportional to 8,520.60, 12,763.87 and 6,768.57 is: 10,139.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,520.60 : 12,763.87 = 6,768.57 : x
  2. Step 2: Convert to fraction form
    8,520.60/12,763.87 = 6,768.57/x
  3. Step 3: Cross multiply
    8,520.60x = 12,763.87 × 6,768.57
  4. Step 4: Simplify right side
    8,520.60x = 86,393,147.57
  5. Step 5: Solve for x
    x = 86,393,147.57/8,520.60
  6. Step 6: Final answer
    x = 10,139.33

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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.