Home / 12,414.92-18,620.76-3,980.71

Finding the Fourth Proportional to 12,414.92, 18,620.76 and 3,980.71

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Solution

The fourth proportional to 12,414.92, 18,620.76 and 3,980.71 is: 5,970.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,414.92 : 18,620.76 = 3,980.71 : x
  2. Step 2: Convert to fraction form
    12,414.92/18,620.76 = 3,980.71/x
  3. Step 3: Cross multiply
    12,414.92x = 18,620.76 × 3,980.71
  4. Step 4: Simplify right side
    12,414.92x = 74,123,798.99
  5. Step 5: Solve for x
    x = 74,123,798.99/12,414.92
  6. Step 6: Final answer
    x = 5,970.54

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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.