Home / 20,755.43-28,642.59-11,324.20

Finding the Fourth Proportional to 20,755.43, 28,642.59 and 11,324.20

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Solution

The fourth proportional to 20,755.43, 28,642.59 and 11,324.20 is: 15,627.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,755.43 : 28,642.59 = 11,324.20 : x
  2. Step 2: Convert to fraction form
    20,755.43/28,642.59 = 11,324.20/x
  3. Step 3: Cross multiply
    20,755.43x = 28,642.59 × 11,324.20
  4. Step 4: Simplify right side
    20,755.43x = 324,354,417.68
  5. Step 5: Solve for x
    x = 324,354,417.68/20,755.43
  6. Step 6: Final answer
    x = 15,627.45

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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.