Home / 18,121.61-25,010.56-11,052.13

Finding the Fourth Proportional to 18,121.61, 25,010.56 and 11,052.13

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Solution

The fourth proportional to 18,121.61, 25,010.56 and 11,052.13 is: 15,253.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,121.61 : 25,010.56 = 11,052.13 : x
  2. Step 2: Convert to fraction form
    18,121.61/25,010.56 = 11,052.13/x
  3. Step 3: Cross multiply
    18,121.61x = 25,010.56 × 11,052.13
  4. Step 4: Simplify right side
    18,121.61x = 276,419,960.49
  5. Step 5: Solve for x
    x = 276,419,960.49/18,121.61
  6. Step 6: Final answer
    x = 15,253.61

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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.