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Finding the Fourth Proportional to 12,661.74, 18,994.84 and 4,869.95

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Solution

The fourth proportional to 12,661.74, 18,994.84 and 4,869.95 is: 7,305.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,661.74 : 18,994.84 = 4,869.95 : x
  2. Step 2: Convert to fraction form
    12,661.74/18,994.84 = 4,869.95/x
  3. Step 3: Cross multiply
    12,661.74x = 18,994.84 × 4,869.95
  4. Step 4: Simplify right side
    12,661.74x = 92,503,813.91
  5. Step 5: Solve for x
    x = 92,503,813.91/12,661.74
  6. Step 6: Final answer
    x = 7,305.77

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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.