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Finding the Fourth Proportional to 29,505.76, 40,671.84 and 20,057.92

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Solution

The fourth proportional to 29,505.76, 40,671.84 and 20,057.92 is: 27,648.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,505.76 : 40,671.84 = 20,057.92 : x
  2. Step 2: Convert to fraction form
    29,505.76/40,671.84 = 20,057.92/x
  3. Step 3: Cross multiply
    29,505.76x = 40,671.84 × 20,057.92
  4. Step 4: Simplify right side
    29,505.76x = 815,792,512.97
  5. Step 5: Solve for x
    x = 815,792,512.97/29,505.76
  6. Step 6: Final answer
    x = 27,648.58

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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.