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Finding the Fourth Proportional to 28,954.52, 39,958.08 and 16,379

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Solution

The fourth proportional to 28,954.52, 39,958.08 and 16,379 is: 22,603.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,954.52 : 39,958.08 = 16,379 : x
  2. Step 2: Convert to fraction form
    28,954.52/39,958.08 = 16,379/x
  3. Step 3: Cross multiply
    28,954.52x = 39,958.08 × 16,379
  4. Step 4: Simplify right side
    28,954.52x = 654,473,392.32
  5. Step 5: Solve for x
    x = 654,473,392.32/28,954.52
  6. Step 6: Final answer
    x = 22,603.50

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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.