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Finding the Fourth Proportional to 34,672.15, 51,976.54 and 12,480.45

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Solution

The fourth proportional to 34,672.15, 51,976.54 and 12,480.45 is: 18,709.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,672.15 : 51,976.54 = 12,480.45 : x
  2. Step 2: Convert to fraction form
    34,672.15/51,976.54 = 12,480.45/x
  3. Step 3: Cross multiply
    34,672.15x = 51,976.54 × 12,480.45
  4. Step 4: Simplify right side
    34,672.15x = 648,690,608.64
  5. Step 5: Solve for x
    x = 648,690,608.64/34,672.15
  6. Step 6: Final answer
    x = 18,709.27

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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.