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Finding the Fourth Proportional to 28,600.04, 39,469.62 and 15,854.73

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Solution

The fourth proportional to 28,600.04, 39,469.62 and 15,854.73 is: 21,880.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,600.04 : 39,469.62 = 15,854.73 : x
  2. Step 2: Convert to fraction form
    28,600.04/39,469.62 = 15,854.73/x
  3. Step 3: Cross multiply
    28,600.04x = 39,469.62 × 15,854.73
  4. Step 4: Simplify right side
    28,600.04x = 625,780,168.30
  5. Step 5: Solve for x
    x = 625,780,168.30/28,600.04
  6. Step 6: Final answer
    x = 21,880.39

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1.5x scale

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.