Home / 18,318.85-27,478.32-5,171.22

Finding the Fourth Proportional to 18,318.85, 27,478.32 and 5,171.22

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Solution

The fourth proportional to 18,318.85, 27,478.32 and 5,171.22 is: 7,756.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,318.85 : 27,478.32 = 5,171.22 : x
  2. Step 2: Convert to fraction form
    18,318.85/27,478.32 = 5,171.22/x
  3. Step 3: Cross multiply
    18,318.85x = 27,478.32 × 5,171.22
  4. Step 4: Simplify right side
    18,318.85x = 142,096,300.56
  5. Step 5: Solve for x
    x = 142,096,300.56/18,318.85
  6. Step 6: Final answer
    x = 7,756.84

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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.