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Finding the Fourth Proportional to 12,491.82, 18,737.46 and 3,726.54

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Solution

The fourth proportional to 12,491.82, 18,737.46 and 3,726.54 is: 5,589.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,491.82 : 18,737.46 = 3,726.54 : x
  2. Step 2: Convert to fraction form
    12,491.82/18,737.46 = 3,726.54/x
  3. Step 3: Cross multiply
    12,491.82x = 18,737.46 × 3,726.54
  4. Step 4: Simplify right side
    12,491.82x = 69,825,894.19
  5. Step 5: Solve for x
    x = 69,825,894.19/12,491.82
  6. Step 6: Final answer
    x = 5,589.73

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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.