Home / 28,369.88-39,149.74-15,794.36

Finding the Fourth Proportional to 28,369.88, 39,149.74 and 15,794.36

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Solution

The fourth proportional to 28,369.88, 39,149.74 and 15,794.36 is: 21,795.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,369.88 : 39,149.74 = 15,794.36 : x
  2. Step 2: Convert to fraction form
    28,369.88/39,149.74 = 15,794.36/x
  3. Step 3: Cross multiply
    28,369.88x = 39,149.74 × 15,794.36
  4. Step 4: Simplify right side
    28,369.88x = 618,345,087.47
  5. Step 5: Solve for x
    x = 618,345,087.47/28,369.88
  6. Step 6: Final answer
    x = 21,795.83

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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.