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Finding the Fourth Proportional to 28,907.52, 39,892 and 16,332

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Solution

The fourth proportional to 28,907.52, 39,892 and 16,332 is: 22,537.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,907.52 : 39,892 = 16,332 : x
  2. Step 2: Convert to fraction form
    28,907.52/39,892 = 16,332/x
  3. Step 3: Cross multiply
    28,907.52x = 39,892 × 16,332
  4. Step 4: Simplify right side
    28,907.52x = 651,516,144
  5. Step 5: Solve for x
    x = 651,516,144/28,907.52
  6. Step 6: Final answer
    x = 22,537.95

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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.