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Finding the Fourth Proportional to 28,559.88, 42,839.96 and 8,838.54

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Solution

The fourth proportional to 28,559.88, 42,839.96 and 8,838.54 is: 13,257.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,559.88 : 42,839.96 = 8,838.54 : x
  2. Step 2: Convert to fraction form
    28,559.88/42,839.96 = 8,838.54/x
  3. Step 3: Cross multiply
    28,559.88x = 42,839.96 × 8,838.54
  4. Step 4: Simplify right side
    28,559.88x = 378,642,655.87
  5. Step 5: Solve for x
    x = 378,642,655.87/28,559.88
  6. Step 6: Final answer
    x = 13,257.85

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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.