Home / 12,429.12-18,643.44-3,195.12

Finding the Fourth Proportional to 12,429.12, 18,643.44 and 3,195.12

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Solution

The fourth proportional to 12,429.12, 18,643.44 and 3,195.12 is: 4,792.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,429.12 : 18,643.44 = 3,195.12 : x
  2. Step 2: Convert to fraction form
    12,429.12/18,643.44 = 3,195.12/x
  3. Step 3: Cross multiply
    12,429.12x = 18,643.44 × 3,195.12
  4. Step 4: Simplify right side
    12,429.12x = 59,568,028.01
  5. Step 5: Solve for x
    x = 59,568,028.01/12,429.12
  6. Step 6: Final answer
    x = 4,792.62

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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.