Home / 21,299.96-31,949.94-8,156.36

Finding the Fourth Proportional to 21,299.96, 31,949.94 and 8,156.36

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Solution

The fourth proportional to 21,299.96, 31,949.94 and 8,156.36 is: 12,234.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,299.96 : 31,949.94 = 8,156.36 : x
  2. Step 2: Convert to fraction form
    21,299.96/31,949.94 = 8,156.36/x
  3. Step 3: Cross multiply
    21,299.96x = 31,949.94 × 8,156.36
  4. Step 4: Simplify right side
    21,299.96x = 260,595,212.62
  5. Step 5: Solve for x
    x = 260,595,212.62/21,299.96
  6. Step 6: Final answer
    x = 12,234.54

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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.