Home / 18,313.71-27,449.91-12,000.75

Finding the Fourth Proportional to 18,313.71, 27,449.91 and 12,000.75

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Solution

The fourth proportional to 18,313.71, 27,449.91 and 12,000.75 is: 17,987.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,313.71 : 27,449.91 = 12,000.75 : x
  2. Step 2: Convert to fraction form
    18,313.71/27,449.91 = 12,000.75/x
  3. Step 3: Cross multiply
    18,313.71x = 27,449.91 × 12,000.75
  4. Step 4: Simplify right side
    18,313.71x = 329,419,507.43
  5. Step 5: Solve for x
    x = 329,419,507.43/18,313.71
  6. Step 6: Final answer
    x = 17,987.59

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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.