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Finding the Fourth Proportional to 11,160.90, 16,704.90 and 8,682.30

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Solution

The fourth proportional to 11,160.90, 16,704.90 and 8,682.30 is: 12,995.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,160.90 : 16,704.90 = 8,682.30 : x
  2. Step 2: Convert to fraction form
    11,160.90/16,704.90 = 8,682.30/x
  3. Step 3: Cross multiply
    11,160.90x = 16,704.90 × 8,682.30
  4. Step 4: Simplify right side
    11,160.90x = 145,036,953.27
  5. Step 5: Solve for x
    x = 145,036,953.27/11,160.90
  6. Step 6: Final answer
    x = 12,995.09

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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.