Home / 28,660.88-39,554.37-15,914.85

Finding the Fourth Proportional to 28,660.88, 39,554.37 and 15,914.85

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Solution

The fourth proportional to 28,660.88, 39,554.37 and 15,914.85 is: 21,963.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,660.88 : 39,554.37 = 15,914.85 : x
  2. Step 2: Convert to fraction form
    28,660.88/39,554.37 = 15,914.85/x
  3. Step 3: Cross multiply
    28,660.88x = 39,554.37 × 15,914.85
  4. Step 4: Simplify right side
    28,660.88x = 629,501,865.39
  5. Step 5: Solve for x
    x = 629,501,865.39/28,660.88
  6. Step 6: Final answer
    x = 21,963.80

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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.