Home / 12,782.09-19,170.90-3,422.94

Finding the Fourth Proportional to 12,782.09, 19,170.90 and 3,422.94

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Solution

The fourth proportional to 12,782.09, 19,170.90 and 3,422.94 is: 5,133.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,782.09 : 19,170.90 = 3,422.94 : x
  2. Step 2: Convert to fraction form
    12,782.09/19,170.90 = 3,422.94/x
  3. Step 3: Cross multiply
    12,782.09x = 19,170.90 × 3,422.94
  4. Step 4: Simplify right side
    12,782.09x = 65,620,840.45
  5. Step 5: Solve for x
    x = 65,620,840.45/12,782.09
  6. Step 6: Final answer
    x = 5,133.81

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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.