Home / 21,959.05-32,861.78-20,115.85

Finding the Fourth Proportional to 21,959.05, 32,861.78 and 20,115.85

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Solution

The fourth proportional to 21,959.05, 32,861.78 and 20,115.85 is: 30,103.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,959.05 : 32,861.78 = 20,115.85 : x
  2. Step 2: Convert to fraction form
    21,959.05/32,861.78 = 20,115.85/x
  3. Step 3: Cross multiply
    21,959.05x = 32,861.78 × 20,115.85
  4. Step 4: Simplify right side
    21,959.05x = 661,042,536.63
  5. Step 5: Solve for x
    x = 661,042,536.63/21,959.05
  6. Step 6: Final answer
    x = 30,103.42

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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.