Home / 19,121.60-28,682.37-12,546.23

Finding the Fourth Proportional to 19,121.60, 28,682.37 and 12,546.23

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Solution

The fourth proportional to 19,121.60, 28,682.37 and 12,546.23 is: 18,819.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,121.60 : 28,682.37 = 12,546.23 : x
  2. Step 2: Convert to fraction form
    19,121.60/28,682.37 = 12,546.23/x
  3. Step 3: Cross multiply
    19,121.60x = 28,682.37 × 12,546.23
  4. Step 4: Simplify right side
    19,121.60x = 359,855,610.97
  5. Step 5: Solve for x
    x = 359,855,610.97/19,121.60
  6. Step 6: Final answer
    x = 18,819.33

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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.