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Finding the Fourth Proportional to 28,082.73, 42,133.20 and 8,361.45

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Solution

The fourth proportional to 28,082.73, 42,133.20 and 8,361.45 is: 12,544.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,082.73 : 42,133.20 = 8,361.45 : x
  2. Step 2: Convert to fraction form
    28,082.73/42,133.20 = 8,361.45/x
  3. Step 3: Cross multiply
    28,082.73x = 42,133.20 × 8,361.45
  4. Step 4: Simplify right side
    28,082.73x = 352,294,645.14
  5. Step 5: Solve for x
    x = 352,294,645.14/28,082.73
  6. Step 6: Final answer
    x = 12,544.89

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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.