Home / 20,215.50-27,899.82-11,832

Finding the Fourth Proportional to 20,215.50, 27,899.82 and 11,832

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Solution

The fourth proportional to 20,215.50, 27,899.82 and 11,832 is: 16,329.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,215.50 : 27,899.82 = 11,832 : x
  2. Step 2: Convert to fraction form
    20,215.50/27,899.82 = 11,832/x
  3. Step 3: Cross multiply
    20,215.50x = 27,899.82 × 11,832
  4. Step 4: Simplify right side
    20,215.50x = 330,110,670.24
  5. Step 5: Solve for x
    x = 330,110,670.24/20,215.50
  6. Step 6: Final answer
    x = 16,329.58

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.