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Finding the Fourth Proportional to 28,762.52, 39,692 and 16,187.28

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Solution

The fourth proportional to 28,762.52, 39,692 and 16,187.28 is: 22,338.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,762.52 : 39,692 = 16,187.28 : x
  2. Step 2: Convert to fraction form
    28,762.52/39,692 = 16,187.28/x
  3. Step 3: Cross multiply
    28,762.52x = 39,692 × 16,187.28
  4. Step 4: Simplify right side
    28,762.52x = 642,505,517.76
  5. Step 5: Solve for x
    x = 642,505,517.76/28,762.52
  6. Step 6: Final answer
    x = 22,338.29

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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.