Home / 14,221.43-21,329.71-3,830.75

Finding the Fourth Proportional to 14,221.43, 21,329.71 and 3,830.75

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Solution

The fourth proportional to 14,221.43, 21,329.71 and 3,830.75 is: 5,745.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,221.43 : 21,329.71 = 3,830.75 : x
  2. Step 2: Convert to fraction form
    14,221.43/21,329.71 = 3,830.75/x
  3. Step 3: Cross multiply
    14,221.43x = 21,329.71 × 3,830.75
  4. Step 4: Simplify right side
    14,221.43x = 81,708,786.58
  5. Step 5: Solve for x
    x = 81,708,786.58/14,221.43
  6. Step 6: Final answer
    x = 5,745.47

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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.