Home / 31,728.84-43,790.39-18,297.42

Finding the Fourth Proportional to 31,728.84, 43,790.39 and 18,297.42

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Solution

The fourth proportional to 31,728.84, 43,790.39 and 18,297.42 is: 25,253.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,728.84 : 43,790.39 = 18,297.42 : x
  2. Step 2: Convert to fraction form
    31,728.84/43,790.39 = 18,297.42/x
  3. Step 3: Cross multiply
    31,728.84x = 43,790.39 × 18,297.42
  4. Step 4: Simplify right side
    31,728.84x = 801,251,157.79
  5. Step 5: Solve for x
    x = 801,251,157.79/31,728.84
  6. Step 6: Final answer
    x = 25,253.09

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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.