Home / 20,131.26-30,196.89-8,457.54

Finding the Fourth Proportional to 20,131.26, 30,196.89 and 8,457.54

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Solution

The fourth proportional to 20,131.26, 30,196.89 and 8,457.54 is: 12,686.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,131.26 : 30,196.89 = 8,457.54 : x
  2. Step 2: Convert to fraction form
    20,131.26/30,196.89 = 8,457.54/x
  3. Step 3: Cross multiply
    20,131.26x = 30,196.89 × 8,457.54
  4. Step 4: Simplify right side
    20,131.26x = 255,391,405.05
  5. Step 5: Solve for x
    x = 255,391,405.05/20,131.26
  6. Step 6: Final answer
    x = 12,686.31

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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.