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Finding the Fourth Proportional to 36,536.91, 50,421.90 and 20,405.46

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Solution

The fourth proportional to 36,536.91, 50,421.90 and 20,405.46 is: 28,160.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,536.91 : 50,421.90 = 20,405.46 : x
  2. Step 2: Convert to fraction form
    36,536.91/50,421.90 = 20,405.46/x
  3. Step 3: Cross multiply
    36,536.91x = 50,421.90 × 20,405.46
  4. Step 4: Simplify right side
    36,536.91x = 1,028,882,063.57
  5. Step 5: Solve for x
    x = 1,028,882,063.57/36,536.91
  6. Step 6: Final answer
    x = 28,160.07

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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.