Home / 13,019.75-19,530.17-3,785.75

Finding the Fourth Proportional to 13,019.75, 19,530.17 and 3,785.75

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Solution

The fourth proportional to 13,019.75, 19,530.17 and 3,785.75 is: 5,678.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,019.75 : 19,530.17 = 3,785.75 : x
  2. Step 2: Convert to fraction form
    13,019.75/19,530.17 = 3,785.75/x
  3. Step 3: Cross multiply
    13,019.75x = 19,530.17 × 3,785.75
  4. Step 4: Simplify right side
    13,019.75x = 73,936,341.08
  5. Step 5: Solve for x
    x = 73,936,341.08/13,019.75
  6. Step 6: Final answer
    x = 5,678.78

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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.