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Finding the Fourth Proportional to 18,908.41, 28,361.58 and 5,759.68

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Solution

The fourth proportional to 18,908.41, 28,361.58 and 5,759.68 is: 8,639.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,908.41 : 28,361.58 = 5,759.68 : x
  2. Step 2: Convert to fraction form
    18,908.41/28,361.58 = 5,759.68/x
  3. Step 3: Cross multiply
    18,908.41x = 28,361.58 × 5,759.68
  4. Step 4: Simplify right side
    18,908.41x = 163,353,625.09
  5. Step 5: Solve for x
    x = 163,353,625.09/18,908.41
  6. Step 6: Final answer
    x = 8,639.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.