Home / 20,750.85-31,126.25-7,604.25

Finding the Fourth Proportional to 20,750.85, 31,126.25 and 7,604.25

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Solution

The fourth proportional to 20,750.85, 31,126.25 and 7,604.25 is: 11,406.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,750.85 : 31,126.25 = 7,604.25 : x
  2. Step 2: Convert to fraction form
    20,750.85/31,126.25 = 7,604.25/x
  3. Step 3: Cross multiply
    20,750.85x = 31,126.25 × 7,604.25
  4. Step 4: Simplify right side
    20,750.85x = 236,691,786.56
  5. Step 5: Solve for x
    x = 236,691,786.56/20,750.85
  6. Step 6: Final answer
    x = 11,406.37

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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.