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Finding the Fourth Proportional to 28,305, 42,450.84 and 11,648.52

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Solution

The fourth proportional to 28,305, 42,450.84 and 11,648.52 is: 17,470.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,305 : 42,450.84 = 11,648.52 : x
  2. Step 2: Convert to fraction form
    28,305/42,450.84 = 11,648.52/x
  3. Step 3: Cross multiply
    28,305x = 42,450.84 × 11,648.52
  4. Step 4: Simplify right side
    28,305x = 494,489,458.76
  5. Step 5: Solve for x
    x = 494,489,458.76/28,305
  6. Step 6: Final answer
    x = 17,470.04

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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.