Home / 28,228.26-42,336.21-11,571.90

Finding the Fourth Proportional to 28,228.26, 42,336.21 and 11,571.90

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Solution

The fourth proportional to 28,228.26, 42,336.21 and 11,571.90 is: 17,355.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,228.26 : 42,336.21 = 11,571.90 : x
  2. Step 2: Convert to fraction form
    28,228.26/42,336.21 = 11,571.90/x
  3. Step 3: Cross multiply
    28,228.26x = 42,336.21 × 11,571.90
  4. Step 4: Simplify right side
    28,228.26x = 489,910,388.50
  5. Step 5: Solve for x
    x = 489,910,388.50/28,228.26
  6. Step 6: Final answer
    x = 17,355.32

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1.5x scale

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.