Home / 20,135.87-27,755.18-13,673.48

Finding the Fourth Proportional to 20,135.87, 27,755.18 and 13,673.48

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Solution

The fourth proportional to 20,135.87, 27,755.18 and 13,673.48 is: 18,847.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,135.87 : 27,755.18 = 13,673.48 : x
  2. Step 2: Convert to fraction form
    20,135.87/27,755.18 = 13,673.48/x
  3. Step 3: Cross multiply
    20,135.87x = 27,755.18 × 13,673.48
  4. Step 4: Simplify right side
    20,135.87x = 379,509,759.85
  5. Step 5: Solve for x
    x = 379,509,759.85/20,135.87
  6. Step 6: Final answer
    x = 18,847.45

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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.