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Finding the Fourth Proportional to 28,484.97, 42,749.17 and 10,728.80

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Solution

The fourth proportional to 28,484.97, 42,749.17 and 10,728.80 is: 16,101.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,484.97 : 42,749.17 = 10,728.80 : x
  2. Step 2: Convert to fraction form
    28,484.97/42,749.17 = 10,728.80/x
  3. Step 3: Cross multiply
    28,484.97x = 42,749.17 × 10,728.80
  4. Step 4: Simplify right side
    28,484.97x = 458,647,455.30
  5. Step 5: Solve for x
    x = 458,647,455.30/28,484.97
  6. Step 6: Final answer
    x = 16,101.39

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1.5x scale

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.