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Finding the Fourth Proportional to 28,536, 39,360.92 and 17,197.80

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Solution

The fourth proportional to 28,536, 39,360.92 and 17,197.80 is: 23,721.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,536 : 39,360.92 = 17,197.80 : x
  2. Step 2: Convert to fraction form
    28,536/39,360.92 = 17,197.80/x
  3. Step 3: Cross multiply
    28,536x = 39,360.92 × 17,197.80
  4. Step 4: Simplify right side
    28,536x = 676,921,229.98
  5. Step 5: Solve for x
    x = 676,921,229.98/28,536
  6. Step 6: Final answer
    x = 23,721.66

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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.