Home / 20,294.82-28,004.42-11,218.95

Finding the Fourth Proportional to 20,294.82, 28,004.42 and 11,218.95

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Solution

The fourth proportional to 20,294.82, 28,004.42 and 11,218.95 is: 15,480.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,294.82 : 28,004.42 = 11,218.95 : x
  2. Step 2: Convert to fraction form
    20,294.82/28,004.42 = 11,218.95/x
  3. Step 3: Cross multiply
    20,294.82x = 28,004.42 × 11,218.95
  4. Step 4: Simplify right side
    20,294.82x = 314,180,131.66
  5. Step 5: Solve for x
    x = 314,180,131.66/20,294.82
  6. Step 6: Final answer
    x = 15,480.81

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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.