Home / 11,811.68-17,719.68-4,886.72

Finding the Fourth Proportional to 11,811.68, 17,719.68 and 4,886.72

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Solution

The fourth proportional to 11,811.68, 17,719.68 and 4,886.72 is: 7,330.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,811.68 : 17,719.68 = 4,886.72 : x
  2. Step 2: Convert to fraction form
    11,811.68/17,719.68 = 4,886.72/x
  3. Step 3: Cross multiply
    11,811.68x = 17,719.68 × 4,886.72
  4. Step 4: Simplify right side
    11,811.68x = 86,591,114.65
  5. Step 5: Solve for x
    x = 86,591,114.65/11,811.68
  6. Step 6: Final answer
    x = 7,330.97

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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.