Home / 18,313.12-25,273.96-11,143.54

Finding the Fourth Proportional to 18,313.12, 25,273.96 and 11,143.54

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Solution

The fourth proportional to 18,313.12, 25,273.96 and 11,143.54 is: 15,379.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,313.12 : 25,273.96 = 11,143.54 : x
  2. Step 2: Convert to fraction form
    18,313.12/25,273.96 = 11,143.54/x
  3. Step 3: Cross multiply
    18,313.12x = 25,273.96 × 11,143.54
  4. Step 4: Simplify right side
    18,313.12x = 281,641,387.95
  5. Step 5: Solve for x
    x = 281,641,387.95/18,313.12
  6. Step 6: Final answer
    x = 15,379.21

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.