Home / 28,980.75-39,993.44-16,405.50

Finding the Fourth Proportional to 28,980.75, 39,993.44 and 16,405.50

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Solution

The fourth proportional to 28,980.75, 39,993.44 and 16,405.50 is: 22,639.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,980.75 : 39,993.44 = 16,405.50 : x
  2. Step 2: Convert to fraction form
    28,980.75/39,993.44 = 16,405.50/x
  3. Step 3: Cross multiply
    28,980.75x = 39,993.44 × 16,405.50
  4. Step 4: Simplify right side
    28,980.75x = 656,112,297.89
  5. Step 5: Solve for x
    x = 656,112,297.89/28,980.75
  6. Step 6: Final answer
    x = 22,639.59

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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.