Home / 39,396.75-54,367.44-21,491.75

Finding the Fourth Proportional to 39,396.75, 54,367.44 and 21,491.75

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Solution

The fourth proportional to 39,396.75, 54,367.44 and 21,491.75 is: 29,658.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,396.75 : 54,367.44 = 21,491.75 : x
  2. Step 2: Convert to fraction form
    39,396.75/54,367.44 = 21,491.75/x
  3. Step 3: Cross multiply
    39,396.75x = 54,367.44 × 21,491.75
  4. Step 4: Simplify right side
    39,396.75x = 1,168,451,185.24
  5. Step 5: Solve for x
    x = 1,168,451,185.24/39,396.75
  6. Step 6: Final answer
    x = 29,658.57

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.