Home / 28,830.78-39,789.09-16,255.26

Finding the Fourth Proportional to 28,830.78, 39,789.09 and 16,255.26

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Solution

The fourth proportional to 28,830.78, 39,789.09 and 16,255.26 is: 22,433.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,830.78 : 39,789.09 = 16,255.26 : x
  2. Step 2: Convert to fraction form
    28,830.78/39,789.09 = 16,255.26/x
  3. Step 3: Cross multiply
    28,830.78x = 39,789.09 × 16,255.26
  4. Step 4: Simplify right side
    28,830.78x = 646,782,003.11
  5. Step 5: Solve for x
    x = 646,782,003.11/28,830.78
  6. Step 6: Final answer
    x = 22,433.73

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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.