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Finding the Fourth Proportional to 28,601, 39,471 and 16,029.80

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Solution

The fourth proportional to 28,601, 39,471 and 16,029.80 is: 22,122.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,601 : 39,471 = 16,029.80 : x
  2. Step 2: Convert to fraction form
    28,601/39,471 = 16,029.80/x
  3. Step 3: Cross multiply
    28,601x = 39,471 × 16,029.80
  4. Step 4: Simplify right side
    28,601x = 632,712,235.80
  5. Step 5: Solve for x
    x = 632,712,235.80/28,601
  6. Step 6: Final answer
    x = 22,122.03

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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.