Home / 31,741.05-43,782.75-20,425.26

Finding the Fourth Proportional to 31,741.05, 43,782.75 and 20,425.26

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Solution

The fourth proportional to 31,741.05, 43,782.75 and 20,425.26 is: 28,174.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,741.05 : 43,782.75 = 20,425.26 : x
  2. Step 2: Convert to fraction form
    31,741.05/43,782.75 = 20,425.26/x
  3. Step 3: Cross multiply
    31,741.05x = 43,782.75 × 20,425.26
  4. Step 4: Simplify right side
    31,741.05x = 894,274,052.27
  5. Step 5: Solve for x
    x = 894,274,052.27/31,741.05
  6. Step 6: Final answer
    x = 28,174.05

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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.