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Finding the Fourth Proportional to 28,993.50, 39,711.23 and 27,291.28

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Solution

The fourth proportional to 28,993.50, 39,711.23 and 27,291.28 is: 37,379.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,993.50 : 39,711.23 = 27,291.28 : x
  2. Step 2: Convert to fraction form
    28,993.50/39,711.23 = 27,291.28/x
  3. Step 3: Cross multiply
    28,993.50x = 39,711.23 × 27,291.28
  4. Step 4: Simplify right side
    28,993.50x = 1,083,770,297.07
  5. Step 5: Solve for x
    x = 1,083,770,297.07/28,993.50
  6. Step 6: Final answer
    x = 37,379.77

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.