Home / 31,725.45-43,780.55-18,297.27

Finding the Fourth Proportional to 31,725.45, 43,780.55 and 18,297.27

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Solution

The fourth proportional to 31,725.45, 43,780.55 and 18,297.27 is: 25,249.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,725.45 : 43,780.55 = 18,297.27 : x
  2. Step 2: Convert to fraction form
    31,725.45/43,780.55 = 18,297.27/x
  3. Step 3: Cross multiply
    31,725.45x = 43,780.55 × 18,297.27
  4. Step 4: Simplify right side
    31,725.45x = 801,064,452.61
  5. Step 5: Solve for x
    x = 801,064,452.61/31,725.45
  6. Step 6: Final answer
    x = 25,249.90

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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.