Home / 13,691.69-20,535.16-3,828.63

Finding the Fourth Proportional to 13,691.69, 20,535.16 and 3,828.63

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Solution

The fourth proportional to 13,691.69, 20,535.16 and 3,828.63 is: 5,742.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,691.69 : 20,535.16 = 3,828.63 : x
  2. Step 2: Convert to fraction form
    13,691.69/20,535.16 = 3,828.63/x
  3. Step 3: Cross multiply
    13,691.69x = 20,535.16 × 3,828.63
  4. Step 4: Simplify right side
    13,691.69x = 78,621,529.63
  5. Step 5: Solve for x
    x = 78,621,529.63/13,691.69
  6. Step 6: Final answer
    x = 5,742.28

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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.