Home / 11,821.79-16,315.21-8,832.43

Finding the Fourth Proportional to 11,821.79, 16,315.21 and 8,832.43

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Solution

The fourth proportional to 11,821.79, 16,315.21 and 8,832.43 is: 12,189.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,821.79 : 16,315.21 = 8,832.43 : x
  2. Step 2: Convert to fraction form
    11,821.79/16,315.21 = 8,832.43/x
  3. Step 3: Cross multiply
    11,821.79x = 16,315.21 × 8,832.43
  4. Step 4: Simplify right side
    11,821.79x = 144,103,052.42
  5. Step 5: Solve for x
    x = 144,103,052.42/11,821.79
  6. Step 6: Final answer
    x = 12,189.61

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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.