Home / 12,721.24-19,081.86-3,956.68

Finding the Fourth Proportional to 12,721.24, 19,081.86 and 3,956.68

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Solution

The fourth proportional to 12,721.24, 19,081.86 and 3,956.68 is: 5,935.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,721.24 : 19,081.86 = 3,956.68 : x
  2. Step 2: Convert to fraction form
    12,721.24/19,081.86 = 3,956.68/x
  3. Step 3: Cross multiply
    12,721.24x = 19,081.86 × 3,956.68
  4. Step 4: Simplify right side
    12,721.24x = 75,500,813.82
  5. Step 5: Solve for x
    x = 75,500,813.82/12,721.24
  6. Step 6: Final answer
    x = 5,935.02

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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.