Home / 12,455.14-18,682.78-3,690.22

Finding the Fourth Proportional to 12,455.14, 18,682.78 and 3,690.22

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Solution

The fourth proportional to 12,455.14, 18,682.78 and 3,690.22 is: 5,535.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,455.14 : 18,682.78 = 3,690.22 : x
  2. Step 2: Convert to fraction form
    12,455.14/18,682.78 = 3,690.22/x
  3. Step 3: Cross multiply
    12,455.14x = 18,682.78 × 3,690.22
  4. Step 4: Simplify right side
    12,455.14x = 68,943,568.41
  5. Step 5: Solve for x
    x = 68,943,568.41/12,455.14
  6. Step 6: Final answer
    x = 5,535.35

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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.