Home / 11,998.41-16,557.70-6,620.90

Finding the Fourth Proportional to 11,998.41, 16,557.70 and 6,620.90

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Solution

The fourth proportional to 11,998.41, 16,557.70 and 6,620.90 is: 9,136.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,998.41 : 16,557.70 = 6,620.90 : x
  2. Step 2: Convert to fraction form
    11,998.41/16,557.70 = 6,620.90/x
  3. Step 3: Cross multiply
    11,998.41x = 16,557.70 × 6,620.90
  4. Step 4: Simplify right side
    11,998.41x = 109,626,838.68
  5. Step 5: Solve for x
    x = 109,626,838.68/11,998.41
  6. Step 6: Final answer
    x = 9,136.78

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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.