Home / 28,662.57-42,977.25-11,111.85

Finding the Fourth Proportional to 28,662.57, 42,977.25 and 11,111.85

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Solution

The fourth proportional to 28,662.57, 42,977.25 and 11,111.85 is: 16,661.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,662.57 : 42,977.25 = 11,111.85 : x
  2. Step 2: Convert to fraction form
    28,662.57/42,977.25 = 11,111.85/x
  3. Step 3: Cross multiply
    28,662.57x = 42,977.25 × 11,111.85
  4. Step 4: Simplify right side
    28,662.57x = 477,556,755.41
  5. Step 5: Solve for x
    x = 477,556,755.41/28,662.57
  6. Step 6: Final answer
    x = 16,661.34

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.