Home / 11,720.96-16,167.46-8,182.88

Finding the Fourth Proportional to 11,720.96, 16,167.46 and 8,182.88

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Solution

The fourth proportional to 11,720.96, 16,167.46 and 8,182.88 is: 11,287.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,720.96 : 16,167.46 = 8,182.88 : x
  2. Step 2: Convert to fraction form
    11,720.96/16,167.46 = 8,182.88/x
  3. Step 3: Cross multiply
    11,720.96x = 16,167.46 × 8,182.88
  4. Step 4: Simplify right side
    11,720.96x = 132,296,385.08
  5. Step 5: Solve for x
    x = 132,296,385.08/11,720.96
  6. Step 6: Final answer
    x = 11,287.16

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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.