Home / 21,081.59-31,627.85-11,212.75

Finding the Fourth Proportional to 21,081.59, 31,627.85 and 11,212.75

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Solution

The fourth proportional to 21,081.59, 31,627.85 and 11,212.75 is: 16,822.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,081.59 : 31,627.85 = 11,212.75 : x
  2. Step 2: Convert to fraction form
    21,081.59/31,627.85 = 11,212.75/x
  3. Step 3: Cross multiply
    21,081.59x = 31,627.85 × 11,212.75
  4. Step 4: Simplify right side
    21,081.59x = 354,635,175.09
  5. Step 5: Solve for x
    x = 354,635,175.09/21,081.59
  6. Step 6: Final answer
    x = 16,822.03

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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.