Home / 20,511.38-30,767.72-6,471.54

Finding the Fourth Proportional to 20,511.38, 30,767.72 and 6,471.54

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Solution

The fourth proportional to 20,511.38, 30,767.72 and 6,471.54 is: 9,707.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,511.38 : 30,767.72 = 6,471.54 : x
  2. Step 2: Convert to fraction form
    20,511.38/30,767.72 = 6,471.54/x
  3. Step 3: Cross multiply
    20,511.38x = 30,767.72 × 6,471.54
  4. Step 4: Simplify right side
    20,511.38x = 199,114,498.33
  5. Step 5: Solve for x
    x = 199,114,498.33/20,511.38
  6. Step 6: Final answer
    x = 9,707.51

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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.