Home / 11,998.29-16,557.53-6,620.78

Finding the Fourth Proportional to 11,998.29, 16,557.53 and 6,620.78

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Solution

The fourth proportional to 11,998.29, 16,557.53 and 6,620.78 is: 9,136.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,998.29 : 16,557.53 = 6,620.78 : x
  2. Step 2: Convert to fraction form
    11,998.29/16,557.53 = 6,620.78/x
  3. Step 3: Cross multiply
    11,998.29x = 16,557.53 × 6,620.78
  4. Step 4: Simplify right side
    11,998.29x = 109,623,647.58
  5. Step 5: Solve for x
    x = 109,623,647.58/11,998.29
  6. Step 6: Final answer
    x = 9,136.61

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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.