Home / 20,556.19-28,335.85-16,772.68

Finding the Fourth Proportional to 20,556.19, 28,335.85 and 16,772.68

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Solution

The fourth proportional to 20,556.19, 28,335.85 and 16,772.68 is: 23,120.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,556.19 : 28,335.85 = 16,772.68 : x
  2. Step 2: Convert to fraction form
    20,556.19/28,335.85 = 16,772.68/x
  3. Step 3: Cross multiply
    20,556.19x = 28,335.85 × 16,772.68
  4. Step 4: Simplify right side
    20,556.19x = 475,268,144.58
  5. Step 5: Solve for x
    x = 475,268,144.58/20,556.19
  6. Step 6: Final answer
    x = 23,120.44

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.