Home / 28,433.69-39,238.49-15,858.44

Finding the Fourth Proportional to 28,433.69, 39,238.49 and 15,858.44

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Solution

The fourth proportional to 28,433.69, 39,238.49 and 15,858.44 is: 21,884.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,433.69 : 39,238.49 = 15,858.44 : x
  2. Step 2: Convert to fraction form
    28,433.69/39,238.49 = 15,858.44/x
  3. Step 3: Cross multiply
    28,433.69x = 39,238.49 × 15,858.44
  4. Step 4: Simplify right side
    28,433.69x = 622,261,180.91
  5. Step 5: Solve for x
    x = 622,261,180.91/28,433.69
  6. Step 6: Final answer
    x = 21,884.65

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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.