Home / 12,369.87-18,555.78-3,604.79

Finding the Fourth Proportional to 12,369.87, 18,555.78 and 3,604.79

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Solution

The fourth proportional to 12,369.87, 18,555.78 and 3,604.79 is: 5,407.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,369.87 : 18,555.78 = 3,604.79 : x
  2. Step 2: Convert to fraction form
    12,369.87/18,555.78 = 3,604.79/x
  3. Step 3: Cross multiply
    12,369.87x = 18,555.78 × 3,604.79
  4. Step 4: Simplify right side
    12,369.87x = 66,889,597.41
  5. Step 5: Solve for x
    x = 66,889,597.41/12,369.87
  6. Step 6: Final answer
    x = 5,407.46

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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.