Home / 28,469.05-39,287.29-15,893.80

Finding the Fourth Proportional to 28,469.05, 39,287.29 and 15,893.80

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Solution

The fourth proportional to 28,469.05, 39,287.29 and 15,893.80 is: 21,933.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,469.05 : 39,287.29 = 15,893.80 : x
  2. Step 2: Convert to fraction form
    28,469.05/39,287.29 = 15,893.80/x
  3. Step 3: Cross multiply
    28,469.05x = 39,287.29 × 15,893.80
  4. Step 4: Simplify right side
    28,469.05x = 624,424,329.80
  5. Step 5: Solve for x
    x = 624,424,329.80/28,469.05
  6. Step 6: Final answer
    x = 21,933.44

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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.