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Finding the Fourth Proportional to 28,845, 39,806.10 and 15,597

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Solution

The fourth proportional to 28,845, 39,806.10 and 15,597 is: 21,523.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,845 : 39,806.10 = 15,597 : x
  2. Step 2: Convert to fraction form
    28,845/39,806.10 = 15,597/x
  3. Step 3: Cross multiply
    28,845x = 39,806.10 × 15,597
  4. Step 4: Simplify right side
    28,845x = 620,855,741.70
  5. Step 5: Solve for x
    x = 620,855,741.70/28,845
  6. Step 6: Final answer
    x = 21,523.86

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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.