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Finding the Fourth Proportional to 28,039.88, 38,694.98 and 16,104

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Solution

The fourth proportional to 28,039.88, 38,694.98 and 16,104 is: 22,223.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,039.88 : 38,694.98 = 16,104 : x
  2. Step 2: Convert to fraction form
    28,039.88/38,694.98 = 16,104/x
  3. Step 3: Cross multiply
    28,039.88x = 38,694.98 × 16,104
  4. Step 4: Simplify right side
    28,039.88x = 623,143,957.92
  5. Step 5: Solve for x
    x = 623,143,957.92/28,039.88
  6. Step 6: Final answer
    x = 22,223.49

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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.