Home / 12,269.70-18,400.68-3,947.87

Finding the Fourth Proportional to 12,269.70, 18,400.68 and 3,947.87

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Solution

The fourth proportional to 12,269.70, 18,400.68 and 3,947.87 is: 5,920.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,269.70 : 18,400.68 = 3,947.87 : x
  2. Step 2: Convert to fraction form
    12,269.70/18,400.68 = 3,947.87/x
  3. Step 3: Cross multiply
    12,269.70x = 18,400.68 × 3,947.87
  4. Step 4: Simplify right side
    12,269.70x = 72,643,400.55
  5. Step 5: Solve for x
    x = 72,643,400.55/12,269.70
  6. Step 6: Final answer
    x = 5,920.55

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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.