Home / 20,140.43-30,162.06-11,795.65

Finding the Fourth Proportional to 20,140.43, 30,162.06 and 11,795.65

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Solution

The fourth proportional to 20,140.43, 30,162.06 and 11,795.65 is: 17,665.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,140.43 : 30,162.06 = 11,795.65 : x
  2. Step 2: Convert to fraction form
    20,140.43/30,162.06 = 11,795.65/x
  3. Step 3: Cross multiply
    20,140.43x = 30,162.06 × 11,795.65
  4. Step 4: Simplify right side
    20,140.43x = 355,781,027.63
  5. Step 5: Solve for x
    x = 355,781,027.63/20,140.43
  6. Step 6: Final answer
    x = 17,665.02

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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.