Home / 12,443.64-18,667.48-3,679.44

Finding the Fourth Proportional to 12,443.64, 18,667.48 and 3,679.44

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Solution

The fourth proportional to 12,443.64, 18,667.48 and 3,679.44 is: 5,519.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,443.64 : 18,667.48 = 3,679.44 : x
  2. Step 2: Convert to fraction form
    12,443.64/18,667.48 = 3,679.44/x
  3. Step 3: Cross multiply
    12,443.64x = 18,667.48 × 3,679.44
  4. Step 4: Simplify right side
    12,443.64x = 68,685,872.61
  5. Step 5: Solve for x
    x = 68,685,872.61/12,443.64
  6. Step 6: Final answer
    x = 5,519.76

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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.