Home / 12,620.32-18,942.19-6,384.74

Finding the Fourth Proportional to 12,620.32, 18,942.19 and 6,384.74

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Solution

The fourth proportional to 12,620.32, 18,942.19 and 6,384.74 is: 9,583.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,620.32 : 18,942.19 = 6,384.74 : x
  2. Step 2: Convert to fraction form
    12,620.32/18,942.19 = 6,384.74/x
  3. Step 3: Cross multiply
    12,620.32x = 18,942.19 × 6,384.74
  4. Step 4: Simplify right side
    12,620.32x = 120,940,847.51
  5. Step 5: Solve for x
    x = 120,940,847.51/12,620.32
  6. Step 6: Final answer
    x = 9,583.03

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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.