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Finding the Fourth Proportional to 28,983.76, 40,001.16 and 16,408.24

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Solution

The fourth proportional to 28,983.76, 40,001.16 and 16,408.24 is: 22,645.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,983.76 : 40,001.16 = 16,408.24 : x
  2. Step 2: Convert to fraction form
    28,983.76/40,001.16 = 16,408.24/x
  3. Step 3: Cross multiply
    28,983.76x = 40,001.16 × 16,408.24
  4. Step 4: Simplify right side
    28,983.76x = 656,348,633.56
  5. Step 5: Solve for x
    x = 656,348,633.56/28,983.76
  6. Step 6: Final answer
    x = 22,645.39

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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.