Home / 31,855.03-43,923.82-20,354.75

Finding the Fourth Proportional to 31,855.03, 43,923.82 and 20,354.75

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Solution

The fourth proportional to 31,855.03, 43,923.82 and 20,354.75 is: 28,066.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,855.03 : 43,923.82 = 20,354.75 : x
  2. Step 2: Convert to fraction form
    31,855.03/43,923.82 = 20,354.75/x
  3. Step 3: Cross multiply
    31,855.03x = 43,923.82 × 20,354.75
  4. Step 4: Simplify right side
    31,855.03x = 894,058,375.15
  5. Step 5: Solve for x
    x = 894,058,375.15/31,855.03
  6. Step 6: Final answer
    x = 28,066.47

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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.