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Finding the Fourth Proportional to 28,993.69, 39,922.32 and 25,388.02

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Solution

The fourth proportional to 28,993.69, 39,922.32 and 25,388.02 is: 34,957.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,993.69 : 39,922.32 = 25,388.02 : x
  2. Step 2: Convert to fraction form
    28,993.69/39,922.32 = 25,388.02/x
  3. Step 3: Cross multiply
    28,993.69x = 39,922.32 × 25,388.02
  4. Step 4: Simplify right side
    28,993.69x = 1,013,548,658.61
  5. Step 5: Solve for x
    x = 1,013,548,658.61/28,993.69
  6. Step 6: Final answer
    x = 34,957.56

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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.