Home / 11,515.68-17,268.71-3,615.53

Finding the Fourth Proportional to 11,515.68, 17,268.71 and 3,615.53

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Solution

The fourth proportional to 11,515.68, 17,268.71 and 3,615.53 is: 5,421.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,515.68 : 17,268.71 = 3,615.53 : x
  2. Step 2: Convert to fraction form
    11,515.68/17,268.71 = 3,615.53/x
  3. Step 3: Cross multiply
    11,515.68x = 17,268.71 × 3,615.53
  4. Step 4: Simplify right side
    11,515.68x = 62,435,434.65
  5. Step 5: Solve for x
    x = 62,435,434.65/11,515.68
  6. Step 6: Final answer
    x = 5,421.78

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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.