Home / 13,240.14-19,859.79-3,379.38

Finding the Fourth Proportional to 13,240.14, 19,859.79 and 3,379.38

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Solution

The fourth proportional to 13,240.14, 19,859.79 and 3,379.38 is: 5,068.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,240.14 : 19,859.79 = 3,379.38 : x
  2. Step 2: Convert to fraction form
    13,240.14/19,859.79 = 3,379.38/x
  3. Step 3: Cross multiply
    13,240.14x = 19,859.79 × 3,379.38
  4. Step 4: Simplify right side
    13,240.14x = 67,113,777.13
  5. Step 5: Solve for x
    x = 67,113,777.13/13,240.14
  6. Step 6: Final answer
    x = 5,068.96

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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.