Home / 10,781.33-16,169.56-2,990.75

Finding the Fourth Proportional to 10,781.33, 16,169.56 and 2,990.75

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Solution

The fourth proportional to 10,781.33, 16,169.56 and 2,990.75 is: 4,485.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,781.33 : 16,169.56 = 2,990.75 : x
  2. Step 2: Convert to fraction form
    10,781.33/16,169.56 = 2,990.75/x
  3. Step 3: Cross multiply
    10,781.33x = 16,169.56 × 2,990.75
  4. Step 4: Simplify right side
    10,781.33x = 48,359,063.67
  5. Step 5: Solve for x
    x = 48,359,063.67/10,781.33
  6. Step 6: Final answer
    x = 4,485.45

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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.