Home / 20,516.73-30,775.10-15,843.57

Finding the Fourth Proportional to 20,516.73, 30,775.10 and 15,843.57

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Solution

The fourth proportional to 20,516.73, 30,775.10 and 15,843.57 is: 23,765.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,516.73 : 30,775.10 = 15,843.57 : x
  2. Step 2: Convert to fraction form
    20,516.73/30,775.10 = 15,843.57/x
  3. Step 3: Cross multiply
    20,516.73x = 30,775.10 × 15,843.57
  4. Step 4: Simplify right side
    20,516.73x = 487,587,451.11
  5. Step 5: Solve for x
    x = 487,587,451.11/20,516.73
  6. Step 6: Final answer
    x = 23,765.36

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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.