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Finding the Fourth Proportional to 30,365.88, 41,904.99 and 16,938

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Solution

The fourth proportional to 30,365.88, 41,904.99 and 16,938 is: 23,374.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,365.88 : 41,904.99 = 16,938 : x
  2. Step 2: Convert to fraction form
    30,365.88/41,904.99 = 16,938/x
  3. Step 3: Cross multiply
    30,365.88x = 41,904.99 × 16,938
  4. Step 4: Simplify right side
    30,365.88x = 709,786,635.93
  5. Step 5: Solve for x
    x = 709,786,635.93/30,365.88
  6. Step 6: Final answer
    x = 23,374.48

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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.