Home / 10,879.67-16,326.80-6,986.81

Finding the Fourth Proportional to 10,879.67, 16,326.80 and 6,986.81

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Solution

The fourth proportional to 10,879.67, 16,326.80 and 6,986.81 is: 10,484.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,879.67 : 16,326.80 = 6,986.81 : x
  2. Step 2: Convert to fraction form
    10,879.67/16,326.80 = 6,986.81/x
  3. Step 3: Cross multiply
    10,879.67x = 16,326.80 × 6,986.81
  4. Step 4: Simplify right side
    10,879.67x = 114,072,132.94
  5. Step 5: Solve for x
    x = 114,072,132.94/10,879.67
  6. Step 6: Final answer
    x = 10,484.89

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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.