Home / 12,735.45-19,103.19-3,970.38

Finding the Fourth Proportional to 12,735.45, 19,103.19 and 3,970.38

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Solution

The fourth proportional to 12,735.45, 19,103.19 and 3,970.38 is: 5,955.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,735.45 : 19,103.19 = 3,970.38 : x
  2. Step 2: Convert to fraction form
    12,735.45/19,103.19 = 3,970.38/x
  3. Step 3: Cross multiply
    12,735.45x = 19,103.19 × 3,970.38
  4. Step 4: Simplify right side
    12,735.45x = 75,846,923.51
  5. Step 5: Solve for x
    x = 75,846,923.51/12,735.45
  6. Step 6: Final answer
    x = 5,955.57

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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.