Home / 20,751.30-31,114.38-8,273.22

Finding the Fourth Proportional to 20,751.30, 31,114.38 and 8,273.22

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Solution

The fourth proportional to 20,751.30, 31,114.38 and 8,273.22 is: 12,404.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,751.30 : 31,114.38 = 8,273.22 : x
  2. Step 2: Convert to fraction form
    20,751.30/31,114.38 = 8,273.22/x
  3. Step 3: Cross multiply
    20,751.30x = 31,114.38 × 8,273.22
  4. Step 4: Simplify right side
    20,751.30x = 257,416,110.90
  5. Step 5: Solve for x
    x = 257,416,110.90/20,751.30
  6. Step 6: Final answer
    x = 12,404.82

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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.