Home / 18,615.36-27,918.45-11,120.97

Finding the Fourth Proportional to 18,615.36, 27,918.45 and 11,120.97

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Solution

The fourth proportional to 18,615.36, 27,918.45 and 11,120.97 is: 16,678.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,615.36 : 27,918.45 = 11,120.97 : x
  2. Step 2: Convert to fraction form
    18,615.36/27,918.45 = 11,120.97/x
  3. Step 3: Cross multiply
    18,615.36x = 27,918.45 × 11,120.97
  4. Step 4: Simplify right side
    18,615.36x = 310,480,244.90
  5. Step 5: Solve for x
    x = 310,480,244.90/18,615.36
  6. Step 6: Final answer
    x = 16,678.71

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1.5x scale

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.