Home / 20,571.46-30,862.68-8,725.72

Finding the Fourth Proportional to 20,571.46, 30,862.68 and 8,725.72

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Solution

The fourth proportional to 20,571.46, 30,862.68 and 8,725.72 is: 13,090.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,571.46 : 30,862.68 = 8,725.72 : x
  2. Step 2: Convert to fraction form
    20,571.46/30,862.68 = 8,725.72/x
  3. Step 3: Cross multiply
    20,571.46x = 30,862.68 × 8,725.72
  4. Step 4: Simplify right side
    20,571.46x = 269,299,104.13
  5. Step 5: Solve for x
    x = 269,299,104.13/20,571.46
  6. Step 6: Final answer
    x = 13,090.91

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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.