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Finding the Fourth Proportional to 28,872, 43,182.90 and 16,997.48

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Solution

The fourth proportional to 28,872, 43,182.90 and 16,997.48 is: 25,422.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,872 : 43,182.90 = 16,997.48 : x
  2. Step 2: Convert to fraction form
    28,872/43,182.90 = 16,997.48/x
  3. Step 3: Cross multiply
    28,872x = 43,182.90 × 16,997.48
  4. Step 4: Simplify right side
    28,872x = 734,000,479.09
  5. Step 5: Solve for x
    x = 734,000,479.09/28,872
  6. Step 6: Final answer
    x = 25,422.57

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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.