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Finding the Fourth Proportional to 28,500.99, 42,751 and 10,974.61

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Solution

The fourth proportional to 28,500.99, 42,751 and 10,974.61 is: 16,461.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,500.99 : 42,751 = 10,974.61 : x
  2. Step 2: Convert to fraction form
    28,500.99/42,751 = 10,974.61/x
  3. Step 3: Cross multiply
    28,500.99x = 42,751 × 10,974.61
  4. Step 4: Simplify right side
    28,500.99x = 469,175,552.11
  5. Step 5: Solve for x
    x = 469,175,552.11/28,500.99
  6. Step 6: Final answer
    x = 16,461.73

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.