Home / 20,755.41-28,642.42-11,323.97

Finding the Fourth Proportional to 20,755.41, 28,642.42 and 11,323.97

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Solution

The fourth proportional to 20,755.41, 28,642.42 and 11,323.97 is: 15,627.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,755.41 : 28,642.42 = 11,323.97 : x
  2. Step 2: Convert to fraction form
    20,755.41/28,642.42 = 11,323.97/x
  3. Step 3: Cross multiply
    20,755.41x = 28,642.42 × 11,323.97
  4. Step 4: Simplify right side
    20,755.41x = 324,345,904.81
  5. Step 5: Solve for x
    x = 324,345,904.81/20,755.41
  6. Step 6: Final answer
    x = 15,627.05

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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.