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Finding the Fourth Proportional to 28,351.96, 42,529.99 and 8,630.54

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Solution

The fourth proportional to 28,351.96, 42,529.99 and 8,630.54 is: 12,946.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,351.96 : 42,529.99 = 8,630.54 : x
  2. Step 2: Convert to fraction form
    28,351.96/42,529.99 = 8,630.54/x
  3. Step 3: Cross multiply
    28,351.96x = 42,529.99 × 8,630.54
  4. Step 4: Simplify right side
    28,351.96x = 367,056,779.89
  5. Step 5: Solve for x
    x = 367,056,779.89/28,351.96
  6. Step 6: Final answer
    x = 12,946.43

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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.