Home / 31,393.19-43,333.97-20,786.24

Finding the Fourth Proportional to 31,393.19, 43,333.97 and 20,786.24

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Solution

The fourth proportional to 31,393.19, 43,333.97 and 20,786.24 is: 28,692.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,393.19 : 43,333.97 = 20,786.24 : x
  2. Step 2: Convert to fraction form
    31,393.19/43,333.97 = 20,786.24/x
  3. Step 3: Cross multiply
    31,393.19x = 43,333.97 × 20,786.24
  4. Step 4: Simplify right side
    31,393.19x = 900,750,178.15
  5. Step 5: Solve for x
    x = 900,750,178.15/31,393.19
  6. Step 6: Final answer
    x = 28,692.54

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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.