Home / 28,751.40-43,143.30-11,218.95

Finding the Fourth Proportional to 28,751.40, 43,143.30 and 11,218.95

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Solution

The fourth proportional to 28,751.40, 43,143.30 and 11,218.95 is: 16,834.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,751.40 : 43,143.30 = 11,218.95 : x
  2. Step 2: Convert to fraction form
    28,751.40/43,143.30 = 11,218.95/x
  3. Step 3: Cross multiply
    28,751.40x = 43,143.30 × 11,218.95
  4. Step 4: Simplify right side
    28,751.40x = 484,022,525.54
  5. Step 5: Solve for x
    x = 484,022,525.54/28,751.40
  6. Step 6: Final answer
    x = 16,834.75

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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.