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Finding the Fourth Proportional to 28,837, 39,795.06 and 15,589

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Solution

The fourth proportional to 28,837, 39,795.06 and 15,589 is: 21,512.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,837 : 39,795.06 = 15,589 : x
  2. Step 2: Convert to fraction form
    28,837/39,795.06 = 15,589/x
  3. Step 3: Cross multiply
    28,837x = 39,795.06 × 15,589
  4. Step 4: Simplify right side
    28,837x = 620,365,190.34
  5. Step 5: Solve for x
    x = 620,365,190.34/28,837
  6. Step 6: Final answer
    x = 21,512.82

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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.