Home / 28,862.78-39,830.46-16,115.22

Finding the Fourth Proportional to 28,862.78, 39,830.46 and 16,115.22

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Solution

The fourth proportional to 28,862.78, 39,830.46 and 16,115.22 is: 22,238.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,862.78 : 39,830.46 = 16,115.22 : x
  2. Step 2: Convert to fraction form
    28,862.78/39,830.46 = 16,115.22/x
  3. Step 3: Cross multiply
    28,862.78x = 39,830.46 × 16,115.22
  4. Step 4: Simplify right side
    28,862.78x = 641,876,625.60
  5. Step 5: Solve for x
    x = 641,876,625.60/28,862.78
  6. Step 6: Final answer
    x = 22,238.91

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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.