Home / 18,321.12-27,478.58-5,171.18

Finding the Fourth Proportional to 18,321.12, 27,478.58 and 5,171.18

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Solution

The fourth proportional to 18,321.12, 27,478.58 and 5,171.18 is: 7,755.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,321.12 : 27,478.58 = 5,171.18 : x
  2. Step 2: Convert to fraction form
    18,321.12/27,478.58 = 5,171.18/x
  3. Step 3: Cross multiply
    18,321.12x = 27,478.58 × 5,171.18
  4. Step 4: Simplify right side
    18,321.12x = 142,096,520.08
  5. Step 5: Solve for x
    x = 142,096,520.08/18,321.12
  6. Step 6: Final answer
    x = 7,755.89

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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.