Home / 20,755.17-28,642.32-11,323.89

Finding the Fourth Proportional to 20,755.17, 28,642.32 and 11,323.89

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Solution

The fourth proportional to 20,755.17, 28,642.32 and 11,323.89 is: 15,627.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,755.17 : 28,642.32 = 11,323.89 : x
  2. Step 2: Convert to fraction form
    20,755.17/28,642.32 = 11,323.89/x
  3. Step 3: Cross multiply
    20,755.17x = 28,642.32 × 11,323.89
  4. Step 4: Simplify right side
    20,755.17x = 324,342,481.02
  5. Step 5: Solve for x
    x = 324,342,481.02/20,755.17
  6. Step 6: Final answer
    x = 15,627.07

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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.