Home / 28,512.78-42,770.92-10,982.66

Finding the Fourth Proportional to 28,512.78, 42,770.92 and 10,982.66

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Solution

The fourth proportional to 28,512.78, 42,770.92 and 10,982.66 is: 16,474.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,512.78 : 42,770.92 = 10,982.66 : x
  2. Step 2: Convert to fraction form
    28,512.78/42,770.92 = 10,982.66/x
  3. Step 3: Cross multiply
    28,512.78x = 42,770.92 × 10,982.66
  4. Step 4: Simplify right side
    28,512.78x = 469,738,472.25
  5. Step 5: Solve for x
    x = 469,738,472.25/28,512.78
  6. Step 6: Final answer
    x = 16,474.66

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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.