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Finding the Fourth Proportional to 28,137.84, 38,831.61 and 16,203.06

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Solution

The fourth proportional to 28,137.84, 38,831.61 and 16,203.06 is: 22,361.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,137.84 : 38,831.61 = 16,203.06 : x
  2. Step 2: Convert to fraction form
    28,137.84/38,831.61 = 16,203.06/x
  3. Step 3: Cross multiply
    28,137.84x = 38,831.61 × 16,203.06
  4. Step 4: Simplify right side
    28,137.84x = 629,190,906.73
  5. Step 5: Solve for x
    x = 629,190,906.73/28,137.84
  6. Step 6: Final answer
    x = 22,361.02

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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.