Home / 20,762.75-31,144.23-5,180.37

Finding the Fourth Proportional to 20,762.75, 31,144.23 and 5,180.37

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Solution

The fourth proportional to 20,762.75, 31,144.23 and 5,180.37 is: 7,770.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,762.75 : 31,144.23 = 5,180.37 : x
  2. Step 2: Convert to fraction form
    20,762.75/31,144.23 = 5,180.37/x
  3. Step 3: Cross multiply
    20,762.75x = 31,144.23 × 5,180.37
  4. Step 4: Simplify right side
    20,762.75x = 161,338,634.77
  5. Step 5: Solve for x
    x = 161,338,634.77/20,762.75
  6. Step 6: Final answer
    x = 7,770.58

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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.