Home / 18,455.37-27,687.78-5,308.71

Finding the Fourth Proportional to 18,455.37, 27,687.78 and 5,308.71

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Solution

The fourth proportional to 18,455.37, 27,687.78 and 5,308.71 is: 7,964.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,455.37 : 27,687.78 = 5,308.71 : x
  2. Step 2: Convert to fraction form
    18,455.37/27,687.78 = 5,308.71/x
  3. Step 3: Cross multiply
    18,455.37x = 27,687.78 × 5,308.71
  4. Step 4: Simplify right side
    18,455.37x = 146,986,394.56
  5. Step 5: Solve for x
    x = 146,986,394.56/18,455.37
  6. Step 6: Final answer
    x = 7,964.42

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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.