Home / 20,800.26-31,199.46-7,651.68

Finding the Fourth Proportional to 20,800.26, 31,199.46 and 7,651.68

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Solution

The fourth proportional to 20,800.26, 31,199.46 and 7,651.68 is: 11,477.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,800.26 : 31,199.46 = 7,651.68 : x
  2. Step 2: Convert to fraction form
    20,800.26/31,199.46 = 7,651.68/x
  3. Step 3: Cross multiply
    20,800.26x = 31,199.46 × 7,651.68
  4. Step 4: Simplify right side
    20,800.26x = 238,728,284.09
  5. Step 5: Solve for x
    x = 238,728,284.09/20,800.26
  6. Step 6: Final answer
    x = 11,477.18

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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.