Home / 20,078.39-27,708.14-11,003.96

Finding the Fourth Proportional to 20,078.39, 27,708.14 and 11,003.96

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Solution

The fourth proportional to 20,078.39, 27,708.14 and 11,003.96 is: 15,185.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,078.39 : 27,708.14 = 11,003.96 : x
  2. Step 2: Convert to fraction form
    20,078.39/27,708.14 = 11,003.96/x
  3. Step 3: Cross multiply
    20,078.39x = 27,708.14 × 11,003.96
  4. Step 4: Simplify right side
    20,078.39x = 304,899,070.67
  5. Step 5: Solve for x
    x = 304,899,070.67/20,078.39
  6. Step 6: Final answer
    x = 15,185.44

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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.