Home / 36,789.40-55,145.70-20,123.80

Finding the Fourth Proportional to 36,789.40, 55,145.70 and 20,123.80

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Solution

The fourth proportional to 36,789.40, 55,145.70 and 20,123.80 is: 30,164.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,789.40 : 55,145.70 = 20,123.80 : x
  2. Step 2: Convert to fraction form
    36,789.40/55,145.70 = 20,123.80/x
  3. Step 3: Cross multiply
    36,789.40x = 55,145.70 × 20,123.80
  4. Step 4: Simplify right side
    36,789.40x = 1,109,741,037.66
  5. Step 5: Solve for x
    x = 1,109,741,037.66/36,789.40
  6. Step 6: Final answer
    x = 30,164.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.