Home / 11,811.68-17,717.21-4,789.81

Finding the Fourth Proportional to 11,811.68, 17,717.21 and 4,789.81

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Solution

The fourth proportional to 11,811.68, 17,717.21 and 4,789.81 is: 7,184.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,811.68 : 17,717.21 = 4,789.81 : x
  2. Step 2: Convert to fraction form
    11,811.68/17,717.21 = 4,789.81/x
  3. Step 3: Cross multiply
    11,811.68x = 17,717.21 × 4,789.81
  4. Step 4: Simplify right side
    11,811.68x = 84,862,069.63
  5. Step 5: Solve for x
    x = 84,862,069.63/11,811.68
  6. Step 6: Final answer
    x = 7,184.59

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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.