Home / 21,956.37-32,921.21-8,613.38

Finding the Fourth Proportional to 21,956.37, 32,921.21 and 8,613.38

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Solution

The fourth proportional to 21,956.37, 32,921.21 and 8,613.38 is: 12,914.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,956.37 : 32,921.21 = 8,613.38 : x
  2. Step 2: Convert to fraction form
    21,956.37/32,921.21 = 8,613.38/x
  3. Step 3: Cross multiply
    21,956.37x = 32,921.21 × 8,613.38
  4. Step 4: Simplify right side
    21,956.37x = 283,562,891.79
  5. Step 5: Solve for x
    x = 283,562,891.79/21,956.37
  6. Step 6: Final answer
    x = 12,914.83

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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.