Home / 20,375.96-30,509.06-13,338.52

Finding the Fourth Proportional to 20,375.96, 30,509.06 and 13,338.52

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Solution

The fourth proportional to 20,375.96, 30,509.06 and 13,338.52 is: 19,971.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,375.96 : 30,509.06 = 13,338.52 : x
  2. Step 2: Convert to fraction form
    20,375.96/30,509.06 = 13,338.52/x
  3. Step 3: Cross multiply
    20,375.96x = 30,509.06 × 13,338.52
  4. Step 4: Simplify right side
    20,375.96x = 406,945,706.99
  5. Step 5: Solve for x
    x = 406,945,706.99/20,375.96
  6. Step 6: Final answer
    x = 19,971.85

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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.