Home / 20,845.76-28,767.25-11,414.32

Finding the Fourth Proportional to 20,845.76, 28,767.25 and 11,414.32

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Solution

The fourth proportional to 20,845.76, 28,767.25 and 11,414.32 is: 15,751.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,845.76 : 28,767.25 = 11,414.32 : x
  2. Step 2: Convert to fraction form
    20,845.76/28,767.25 = 11,414.32/x
  3. Step 3: Cross multiply
    20,845.76x = 28,767.25 × 11,414.32
  4. Step 4: Simplify right side
    20,845.76x = 328,358,539.37
  5. Step 5: Solve for x
    x = 328,358,539.37/20,845.76
  6. Step 6: Final answer
    x = 15,751.82

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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.