Home / 12,629.13-18,942.21-3,864.12

Finding the Fourth Proportional to 12,629.13, 18,942.21 and 3,864.12

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Solution

The fourth proportional to 12,629.13, 18,942.21 and 3,864.12 is: 5,795.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,629.13 : 18,942.21 = 3,864.12 : x
  2. Step 2: Convert to fraction form
    12,629.13/18,942.21 = 3,864.12/x
  3. Step 3: Cross multiply
    12,629.13x = 18,942.21 × 3,864.12
  4. Step 4: Simplify right side
    12,629.13x = 73,194,972.51
  5. Step 5: Solve for x
    x = 73,194,972.51/12,629.13
  6. Step 6: Final answer
    x = 5,795.73

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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.