Home / 12,662.38-18,995.87-6,340.56

Finding the Fourth Proportional to 12,662.38, 18,995.87 and 6,340.56

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Solution

The fourth proportional to 12,662.38, 18,995.87 and 6,340.56 is: 9,511.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,662.38 : 18,995.87 = 6,340.56 : x
  2. Step 2: Convert to fraction form
    12,662.38/18,995.87 = 6,340.56/x
  3. Step 3: Cross multiply
    12,662.38x = 18,995.87 × 6,340.56
  4. Step 4: Simplify right side
    12,662.38x = 120,444,453.49
  5. Step 5: Solve for x
    x = 120,444,453.49/12,662.38
  6. Step 6: Final answer
    x = 9,511.99

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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.