Home / 31,619.46-43,650.09-20,305.84

Finding the Fourth Proportional to 31,619.46, 43,650.09 and 20,305.84

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Solution

The fourth proportional to 31,619.46, 43,650.09 and 20,305.84 is: 28,031.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,619.46 : 43,650.09 = 20,305.84 : x
  2. Step 2: Convert to fraction form
    31,619.46/43,650.09 = 20,305.84/x
  3. Step 3: Cross multiply
    31,619.46x = 43,650.09 × 20,305.84
  4. Step 4: Simplify right side
    31,619.46x = 886,351,716.24
  5. Step 5: Solve for x
    x = 886,351,716.24/31,619.46
  6. Step 6: Final answer
    x = 28,031.84

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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.