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Finding the Fourth Proportional to 30,108, 41,548.96 and 16,679.28

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Solution

The fourth proportional to 30,108, 41,548.96 and 16,679.28 is: 23,017.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,108 : 41,548.96 = 16,679.28 : x
  2. Step 2: Convert to fraction form
    30,108/41,548.96 = 16,679.28/x
  3. Step 3: Cross multiply
    30,108x = 41,548.96 × 16,679.28
  4. Step 4: Simplify right side
    30,108x = 693,006,737.55
  5. Step 5: Solve for x
    x = 693,006,737.55/30,108
  6. Step 6: Final answer
    x = 23,017.36

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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.