Home / 20,078.73-27,708.32-11,126.21

Finding the Fourth Proportional to 20,078.73, 27,708.32 and 11,126.21

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Solution

The fourth proportional to 20,078.73, 27,708.32 and 11,126.21 is: 15,353.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,078.73 : 27,708.32 = 11,126.21 : x
  2. Step 2: Convert to fraction form
    20,078.73/27,708.32 = 11,126.21/x
  3. Step 3: Cross multiply
    20,078.73x = 27,708.32 × 11,126.21
  4. Step 4: Simplify right side
    20,078.73x = 308,288,476.34
  5. Step 5: Solve for x
    x = 308,288,476.34/20,078.73
  6. Step 6: Final answer
    x = 15,353.98

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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.