Home / 13,674.28-18,871.92-8,372.60

Finding the Fourth Proportional to 13,674.28, 18,871.92 and 8,372.60

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Solution

The fourth proportional to 13,674.28, 18,871.92 and 8,372.60 is: 11,555.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,674.28 : 18,871.92 = 8,372.60 : x
  2. Step 2: Convert to fraction form
    13,674.28/18,871.92 = 8,372.60/x
  3. Step 3: Cross multiply
    13,674.28x = 18,871.92 × 8,372.60
  4. Step 4: Simplify right side
    13,674.28x = 158,007,037.39
  5. Step 5: Solve for x
    x = 158,007,037.39/13,674.28
  6. Step 6: Final answer
    x = 11,555.05

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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.