Home / 20,850.75-31,279.37-7,002.99

Finding the Fourth Proportional to 20,850.75, 31,279.37 and 7,002.99

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Solution

The fourth proportional to 20,850.75, 31,279.37 and 7,002.99 is: 10,505.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,850.75 : 31,279.37 = 7,002.99 : x
  2. Step 2: Convert to fraction form
    20,850.75/31,279.37 = 7,002.99/x
  3. Step 3: Cross multiply
    20,850.75x = 31,279.37 × 7,002.99
  4. Step 4: Simplify right side
    20,850.75x = 219,049,080.30
  5. Step 5: Solve for x
    x = 219,049,080.30/20,850.75
  6. Step 6: Final answer
    x = 10,505.57

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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.