Home / 31,141.94-42,975.87-19,212.20

Finding the Fourth Proportional to 31,141.94, 42,975.87 and 19,212.20

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Solution

The fourth proportional to 31,141.94, 42,975.87 and 19,212.20 is: 26,512.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,141.94 : 42,975.87 = 19,212.20 : x
  2. Step 2: Convert to fraction form
    31,141.94/42,975.87 = 19,212.20/x
  3. Step 3: Cross multiply
    31,141.94x = 42,975.87 × 19,212.20
  4. Step 4: Simplify right side
    31,141.94x = 825,660,883.85
  5. Step 5: Solve for x
    x = 825,660,883.85/31,141.94
  6. Step 6: Final answer
    x = 26,512.83

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.