Home / 20,795.67-31,201.26-12,481.65

Finding the Fourth Proportional to 20,795.67, 31,201.26 and 12,481.65

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Solution

The fourth proportional to 20,795.67, 31,201.26 and 12,481.65 is: 18,727.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,795.67 : 31,201.26 = 12,481.65 : x
  2. Step 2: Convert to fraction form
    20,795.67/31,201.26 = 12,481.65/x
  3. Step 3: Cross multiply
    20,795.67x = 31,201.26 × 12,481.65
  4. Step 4: Simplify right side
    20,795.67x = 389,443,206.88
  5. Step 5: Solve for x
    x = 389,443,206.88/20,795.67
  6. Step 6: Final answer
    x = 18,727.13

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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.