Home / 20,021.16-30,042.44-11,256.72

Finding the Fourth Proportional to 20,021.16, 30,042.44 and 11,256.72

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Solution

The fourth proportional to 20,021.16, 30,042.44 and 11,256.72 is: 16,891.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,021.16 : 30,042.44 = 11,256.72 : x
  2. Step 2: Convert to fraction form
    20,021.16/30,042.44 = 11,256.72/x
  3. Step 3: Cross multiply
    20,021.16x = 30,042.44 × 11,256.72
  4. Step 4: Simplify right side
    20,021.16x = 338,179,335.20
  5. Step 5: Solve for x
    x = 338,179,335.20/20,021.16
  6. Step 6: Final answer
    x = 16,891.10

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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.