Home / 18,112.91-25,001.96-11,409.75

Finding the Fourth Proportional to 18,112.91, 25,001.96 and 11,409.75

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Solution

The fourth proportional to 18,112.91, 25,001.96 and 11,409.75 is: 15,749.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,112.91 : 25,001.96 = 11,409.75 : x
  2. Step 2: Convert to fraction form
    18,112.91/25,001.96 = 11,409.75/x
  3. Step 3: Cross multiply
    18,112.91x = 25,001.96 × 11,409.75
  4. Step 4: Simplify right side
    18,112.91x = 285,266,056.06
  5. Step 5: Solve for x
    x = 285,266,056.06/18,112.91
  6. Step 6: Final answer
    x = 15,749.33

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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.