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Finding the Fourth Proportional to 28,243.72, 42,369.21 and 8,524.26

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Solution

The fourth proportional to 28,243.72, 42,369.21 and 8,524.26 is: 12,787.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,243.72 : 42,369.21 = 8,524.26 : x
  2. Step 2: Convert to fraction form
    28,243.72/42,369.21 = 8,524.26/x
  3. Step 3: Cross multiply
    28,243.72x = 42,369.21 × 8,524.26
  4. Step 4: Simplify right side
    28,243.72x = 361,166,162.03
  5. Step 5: Solve for x
    x = 361,166,162.03/28,243.72
  6. Step 6: Final answer
    x = 12,787.49

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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.