Home / 20,414.20-28,170.66-11,461.54

Finding the Fourth Proportional to 20,414.20, 28,170.66 and 11,461.54

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Solution

The fourth proportional to 20,414.20, 28,170.66 and 11,461.54 is: 15,816.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,414.20 : 28,170.66 = 11,461.54 : x
  2. Step 2: Convert to fraction form
    20,414.20/28,170.66 = 11,461.54/x
  3. Step 3: Cross multiply
    20,414.20x = 28,170.66 × 11,461.54
  4. Step 4: Simplify right side
    20,414.20x = 322,879,146.42
  5. Step 5: Solve for x
    x = 322,879,146.42/20,414.20
  6. Step 6: Final answer
    x = 15,816.40

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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.