Home / 20,145.56-30,176.82-11,800.28

Finding the Fourth Proportional to 20,145.56, 30,176.82 and 11,800.28

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Solution

The fourth proportional to 20,145.56, 30,176.82 and 11,800.28 is: 17,676.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,145.56 : 30,176.82 = 11,800.28 : x
  2. Step 2: Convert to fraction form
    20,145.56/30,176.82 = 11,800.28/x
  3. Step 3: Cross multiply
    20,145.56x = 30,176.82 × 11,800.28
  4. Step 4: Simplify right side
    20,145.56x = 356,094,874.36
  5. Step 5: Solve for x
    x = 356,094,874.36/20,145.56
  6. Step 6: Final answer
    x = 17,676.09

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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.