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Finding the Fourth Proportional to 13,361.94, 18,439.38 and 8,059.68

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Solution

The fourth proportional to 13,361.94, 18,439.38 and 8,059.68 is: 11,122.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,361.94 : 18,439.38 = 8,059.68 : x
  2. Step 2: Convert to fraction form
    13,361.94/18,439.38 = 8,059.68/x
  3. Step 3: Cross multiply
    13,361.94x = 18,439.38 × 8,059.68
  4. Step 4: Simplify right side
    13,361.94x = 148,615,502.20
  5. Step 5: Solve for x
    x = 148,615,502.20/13,361.94
  6. Step 6: Final answer
    x = 11,122.30

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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.