Home / 28,687.75-39,589.11-16,112.50

Finding the Fourth Proportional to 28,687.75, 39,589.11 and 16,112.50

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Solution

The fourth proportional to 28,687.75, 39,589.11 and 16,112.50 is: 22,235.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,687.75 : 39,589.11 = 16,112.50 : x
  2. Step 2: Convert to fraction form
    28,687.75/39,589.11 = 16,112.50/x
  3. Step 3: Cross multiply
    28,687.75x = 39,589.11 × 16,112.50
  4. Step 4: Simplify right side
    28,687.75x = 637,879,534.88
  5. Step 5: Solve for x
    x = 637,879,534.88/28,687.75
  6. Step 6: Final answer
    x = 22,235.26

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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.