Home / 11,811.10-16,300.48-8,821.75

Finding the Fourth Proportional to 11,811.10, 16,300.48 and 8,821.75

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Solution

The fourth proportional to 11,811.10, 16,300.48 and 8,821.75 is: 12,174.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,811.10 : 16,300.48 = 8,821.75 : x
  2. Step 2: Convert to fraction form
    11,811.10/16,300.48 = 8,821.75/x
  3. Step 3: Cross multiply
    11,811.10x = 16,300.48 × 8,821.75
  4. Step 4: Simplify right side
    11,811.10x = 143,798,759.44
  5. Step 5: Solve for x
    x = 143,798,759.44/11,811.10
  6. Step 6: Final answer
    x = 12,174.88

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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.