Home / 10,234.80-15,352.20-8,120.70

Finding the Fourth Proportional to 10,234.80, 15,352.20 and 8,120.70

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Solution

The fourth proportional to 10,234.80, 15,352.20 and 8,120.70 is: 12,181.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,234.80 : 15,352.20 = 8,120.70 : x
  2. Step 2: Convert to fraction form
    10,234.80/15,352.20 = 8,120.70/x
  3. Step 3: Cross multiply
    10,234.80x = 15,352.20 × 8,120.70
  4. Step 4: Simplify right side
    10,234.80x = 124,670,610.54
  5. Step 5: Solve for x
    x = 124,670,610.54/10,234.80
  6. Step 6: Final answer
    x = 12,181.05

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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.