Home / 28,857.03-39,791.31-18,766.77

Finding the Fourth Proportional to 28,857.03, 39,791.31 and 18,766.77

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Solution

The fourth proportional to 28,857.03, 39,791.31 and 18,766.77 is: 25,877.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,857.03 : 39,791.31 = 18,766.77 : x
  2. Step 2: Convert to fraction form
    28,857.03/39,791.31 = 18,766.77/x
  3. Step 3: Cross multiply
    28,857.03x = 39,791.31 × 18,766.77
  4. Step 4: Simplify right side
    28,857.03x = 746,754,362.77
  5. Step 5: Solve for x
    x = 746,754,362.77/28,857.03
  6. Step 6: Final answer
    x = 25,877.73

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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.