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Finding the Fourth Proportional to 32,879.76, 45,361.32 and 20,940.96

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Solution

The fourth proportional to 32,879.76, 45,361.32 and 20,940.96 is: 28,890.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    32,879.76 : 45,361.32 = 20,940.96 : x
  2. Step 2: Convert to fraction form
    32,879.76/45,361.32 = 20,940.96/x
  3. Step 3: Cross multiply
    32,879.76x = 45,361.32 × 20,940.96
  4. Step 4: Simplify right side
    32,879.76x = 949,909,587.67
  5. Step 5: Solve for x
    x = 949,909,587.67/32,879.76
  6. Step 6: Final answer
    x = 28,890.41

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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.