Home / 33,121.56-45,709.98-18,218.52

Finding the Fourth Proportional to 33,121.56, 45,709.98 and 18,218.52

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Solution

The fourth proportional to 33,121.56, 45,709.98 and 18,218.52 is: 25,142.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    33,121.56 : 45,709.98 = 18,218.52 : x
  2. Step 2: Convert to fraction form
    33,121.56/45,709.98 = 18,218.52/x
  3. Step 3: Cross multiply
    33,121.56x = 45,709.98 × 18,218.52
  4. Step 4: Simplify right side
    33,121.56x = 832,768,184.83
  5. Step 5: Solve for x
    x = 832,768,184.83/33,121.56
  6. Step 6: Final answer
    x = 25,142.78

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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.