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Finding the Fourth Proportional to 33,686.99, 50,423.87 and 21,163.68

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Solution

The fourth proportional to 33,686.99, 50,423.87 and 21,163.68 is: 31,678.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    33,686.99 : 50,423.87 = 21,163.68 : x
  2. Step 2: Convert to fraction form
    33,686.99/50,423.87 = 21,163.68/x
  3. Step 3: Cross multiply
    33,686.99x = 50,423.87 × 21,163.68
  4. Step 4: Simplify right side
    33,686.99x = 1,067,154,582.91
  5. Step 5: Solve for x
    x = 1,067,154,582.91/33,686.99
  6. Step 6: Final answer
    x = 31,678.54

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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.