Home / 13,144.67-19,720.14-4,379.66

Finding the Fourth Proportional to 13,144.67, 19,720.14 and 4,379.66

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Solution

The fourth proportional to 13,144.67, 19,720.14 and 4,379.66 is: 6,570.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,144.67 : 19,720.14 = 4,379.66 : x
  2. Step 2: Convert to fraction form
    13,144.67/19,720.14 = 4,379.66/x
  3. Step 3: Cross multiply
    13,144.67x = 19,720.14 × 4,379.66
  4. Step 4: Simplify right side
    13,144.67x = 86,367,387.85
  5. Step 5: Solve for x
    x = 86,367,387.85/13,144.67
  6. Step 6: Final answer
    x = 6,570.53

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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.