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Finding the Fourth Proportional to 12,605, 18,903.48 and 4,169.94

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Solution

The fourth proportional to 12,605, 18,903.48 and 4,169.94 is: 6,253.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,605 : 18,903.48 = 4,169.94 : x
  2. Step 2: Convert to fraction form
    12,605/18,903.48 = 4,169.94/x
  3. Step 3: Cross multiply
    12,605x = 18,903.48 × 4,169.94
  4. Step 4: Simplify right side
    12,605x = 78,826,377.39
  5. Step 5: Solve for x
    x = 78,826,377.39/12,605
  6. Step 6: Final answer
    x = 6,253.58

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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.