Home / 20,217.74-30,288.33-11,458.80

Finding the Fourth Proportional to 20,217.74, 30,288.33 and 11,458.80

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Solution

The fourth proportional to 20,217.74, 30,288.33 and 11,458.80 is: 17,166.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,217.74 : 30,288.33 = 11,458.80 : x
  2. Step 2: Convert to fraction form
    20,217.74/30,288.33 = 11,458.80/x
  3. Step 3: Cross multiply
    20,217.74x = 30,288.33 × 11,458.80
  4. Step 4: Simplify right side
    20,217.74x = 347,067,915.80
  5. Step 5: Solve for x
    x = 347,067,915.80/20,217.74
  6. Step 6: Final answer
    x = 17,166.51

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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.