Home / 8,129.44-12,210.36-7,670.96

Finding the Fourth Proportional to 8,129.44, 12,210.36 and 7,670.96

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Solution

The fourth proportional to 8,129.44, 12,210.36 and 7,670.96 is: 11,521.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,129.44 : 12,210.36 = 7,670.96 : x
  2. Step 2: Convert to fraction form
    8,129.44/12,210.36 = 7,670.96/x
  3. Step 3: Cross multiply
    8,129.44x = 12,210.36 × 7,670.96
  4. Step 4: Simplify right side
    8,129.44x = 93,665,183.15
  5. Step 5: Solve for x
    x = 93,665,183.15/8,129.44
  6. Step 6: Final answer
    x = 11,521.73

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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.