Home / 13,760.04-18,993.70-8,171

Finding the Fourth Proportional to 13,760.04, 18,993.70 and 8,171

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Solution

The fourth proportional to 13,760.04, 18,993.70 and 8,171 is: 11,278.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,760.04 : 18,993.70 = 8,171 : x
  2. Step 2: Convert to fraction form
    13,760.04/18,993.70 = 8,171/x
  3. Step 3: Cross multiply
    13,760.04x = 18,993.70 × 8,171
  4. Step 4: Simplify right side
    13,760.04x = 155,197,522.70
  5. Step 5: Solve for x
    x = 155,197,522.70/13,760.04
  6. Step 6: Final answer
    x = 11,278.86

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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.