Home / 21,214.56-31,789.44-11,850.96

Finding the Fourth Proportional to 21,214.56, 31,789.44 and 11,850.96

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Solution

The fourth proportional to 21,214.56, 31,789.44 and 11,850.96 is: 17,758.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,214.56 : 31,789.44 = 11,850.96 : x
  2. Step 2: Convert to fraction form
    21,214.56/31,789.44 = 11,850.96/x
  3. Step 3: Cross multiply
    21,214.56x = 31,789.44 × 11,850.96
  4. Step 4: Simplify right side
    21,214.56x = 376,735,381.86
  5. Step 5: Solve for x
    x = 376,735,381.86/21,214.56
  6. Step 6: Final answer
    x = 17,758.34

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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.