Home / 20,511.32-30,757.26-10,640.72

Finding the Fourth Proportional to 20,511.32, 30,757.26 and 10,640.72

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Solution

The fourth proportional to 20,511.32, 30,757.26 and 10,640.72 is: 15,956.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,511.32 : 30,757.26 = 10,640.72 : x
  2. Step 2: Convert to fraction form
    20,511.32/30,757.26 = 10,640.72/x
  3. Step 3: Cross multiply
    20,511.32x = 30,757.26 × 10,640.72
  4. Step 4: Simplify right side
    20,511.32x = 327,279,391.63
  5. Step 5: Solve for x
    x = 327,279,391.63/20,511.32
  6. Step 6: Final answer
    x = 15,956.04

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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.