Home / 13,129.14-19,693.71-3,895.86

Finding the Fourth Proportional to 13,129.14, 19,693.71 and 3,895.86

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Solution

The fourth proportional to 13,129.14, 19,693.71 and 3,895.86 is: 5,843.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,129.14 : 19,693.71 = 3,895.86 : x
  2. Step 2: Convert to fraction form
    13,129.14/19,693.71 = 3,895.86/x
  3. Step 3: Cross multiply
    13,129.14x = 19,693.71 × 3,895.86
  4. Step 4: Simplify right side
    13,129.14x = 76,723,937.04
  5. Step 5: Solve for x
    x = 76,723,937.04/13,129.14
  6. Step 6: Final answer
    x = 5,843.79

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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.