Home / 11,909.05-16,415.33-8,079.44

Finding the Fourth Proportional to 11,909.05, 16,415.33 and 8,079.44

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Solution

The fourth proportional to 11,909.05, 16,415.33 and 8,079.44 is: 11,136.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,909.05 : 16,415.33 = 8,079.44 : x
  2. Step 2: Convert to fraction form
    11,909.05/16,415.33 = 8,079.44/x
  3. Step 3: Cross multiply
    11,909.05x = 16,415.33 × 8,079.44
  4. Step 4: Simplify right side
    11,909.05x = 132,626,551.34
  5. Step 5: Solve for x
    x = 132,626,551.34/11,909.05
  6. Step 6: Final answer
    x = 11,136.62

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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.