Home / 28,480.87-42,694.64-11,830.30

Finding the Fourth Proportional to 28,480.87, 42,694.64 and 11,830.30

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Solution

The fourth proportional to 28,480.87, 42,694.64 and 11,830.30 is: 17,734.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,480.87 : 42,694.64 = 11,830.30 : x
  2. Step 2: Convert to fraction form
    28,480.87/42,694.64 = 11,830.30/x
  3. Step 3: Cross multiply
    28,480.87x = 42,694.64 × 11,830.30
  4. Step 4: Simplify right side
    28,480.87x = 505,090,584.77
  5. Step 5: Solve for x
    x = 505,090,584.77/28,480.87
  6. Step 6: Final answer
    x = 17,734.38

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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.