Home / 18,086.30-27,129.45-11,885.75

Finding the Fourth Proportional to 18,086.30, 27,129.45 and 11,885.75

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Solution

The fourth proportional to 18,086.30, 27,129.45 and 11,885.75 is: 17,828.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,086.30 : 27,129.45 = 11,885.75 : x
  2. Step 2: Convert to fraction form
    18,086.30/27,129.45 = 11,885.75/x
  3. Step 3: Cross multiply
    18,086.30x = 27,129.45 × 11,885.75
  4. Step 4: Simplify right side
    18,086.30x = 322,453,860.34
  5. Step 5: Solve for x
    x = 322,453,860.34/18,086.30
  6. Step 6: Final answer
    x = 17,828.63

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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.