Home / 20,766.09-31,097.89-11,859.33

Finding the Fourth Proportional to 20,766.09, 31,097.89 and 11,859.33

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Solution

The fourth proportional to 20,766.09, 31,097.89 and 11,859.33 is: 17,759.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,766.09 : 31,097.89 = 11,859.33 : x
  2. Step 2: Convert to fraction form
    20,766.09/31,097.89 = 11,859.33/x
  3. Step 3: Cross multiply
    20,766.09x = 31,097.89 × 11,859.33
  4. Step 4: Simplify right side
    20,766.09x = 368,800,139.81
  5. Step 5: Solve for x
    x = 368,800,139.81/20,766.09
  6. Step 6: Final answer
    x = 17,759.73

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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.