Home / 12,427.40-18,644.58-3,662.12

Finding the Fourth Proportional to 12,427.40, 18,644.58 and 3,662.12

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Solution

The fourth proportional to 12,427.40, 18,644.58 and 3,662.12 is: 5,494.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,427.40 : 18,644.58 = 3,662.12 : x
  2. Step 2: Convert to fraction form
    12,427.40/18,644.58 = 3,662.12/x
  3. Step 3: Cross multiply
    12,427.40x = 18,644.58 × 3,662.12
  4. Step 4: Simplify right side
    12,427.40x = 68,278,689.31
  5. Step 5: Solve for x
    x = 68,278,689.31/12,427.40
  6. Step 6: Final answer
    x = 5,494.21

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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.