Home / 21,249.49-31,846.92-8,778.27

Finding the Fourth Proportional to 21,249.49, 31,846.92 and 8,778.27

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Solution

The fourth proportional to 21,249.49, 31,846.92 and 8,778.27 is: 13,156.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,249.49 : 31,846.92 = 8,778.27 : x
  2. Step 2: Convert to fraction form
    21,249.49/31,846.92 = 8,778.27/x
  3. Step 3: Cross multiply
    21,249.49x = 31,846.92 × 8,778.27
  4. Step 4: Simplify right side
    21,249.49x = 279,560,998.31
  5. Step 5: Solve for x
    x = 279,560,998.31/21,249.49
  6. Step 6: Final answer
    x = 13,156.13

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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.