Home / 31,744.40-43,844.64-21,115.04

Finding the Fourth Proportional to 31,744.40, 43,844.64 and 21,115.04

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Solution

The fourth proportional to 31,744.40, 43,844.64 and 21,115.04 is: 29,163.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,744.40 : 43,844.64 = 21,115.04 : x
  2. Step 2: Convert to fraction form
    31,744.40/43,844.64 = 21,115.04/x
  3. Step 3: Cross multiply
    31,744.40x = 43,844.64 × 21,115.04
  4. Step 4: Simplify right side
    31,744.40x = 925,781,327.39
  5. Step 5: Solve for x
    x = 925,781,327.39/31,744.40
  6. Step 6: Final answer
    x = 29,163.61

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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.