Home / 20,404.44-28,131.06-13,318.56

Finding the Fourth Proportional to 20,404.44, 28,131.06 and 13,318.56

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Solution

The fourth proportional to 20,404.44, 28,131.06 and 13,318.56 is: 18,361.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,404.44 : 28,131.06 = 13,318.56 : x
  2. Step 2: Convert to fraction form
    20,404.44/28,131.06 = 13,318.56/x
  3. Step 3: Cross multiply
    20,404.44x = 28,131.06 × 13,318.56
  4. Step 4: Simplify right side
    20,404.44x = 374,665,210.47
  5. Step 5: Solve for x
    x = 374,665,210.47/20,404.44
  6. Step 6: Final answer
    x = 18,361.95

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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.