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Finding the Fourth Proportional to 28,604.80, 39,484.56 and 16,672.96

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Solution

The fourth proportional to 28,604.80, 39,484.56 and 16,672.96 is: 23,014.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,604.80 : 39,484.56 = 16,672.96 : x
  2. Step 2: Convert to fraction form
    28,604.80/39,484.56 = 16,672.96/x
  3. Step 3: Cross multiply
    28,604.80x = 39,484.56 × 16,672.96
  4. Step 4: Simplify right side
    28,604.80x = 658,324,489.50
  5. Step 5: Solve for x
    x = 658,324,489.50/28,604.80
  6. Step 6: Final answer
    x = 23,014.48

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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.