Home / 21,093.88-31,631.64-11,230.96

Finding the Fourth Proportional to 21,093.88, 31,631.64 and 11,230.96

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Solution

The fourth proportional to 21,093.88, 31,631.64 and 11,230.96 is: 16,841.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,093.88 : 31,631.64 = 11,230.96 : x
  2. Step 2: Convert to fraction form
    21,093.88/31,631.64 = 11,230.96/x
  3. Step 3: Cross multiply
    21,093.88x = 31,631.64 × 11,230.96
  4. Step 4: Simplify right side
    21,093.88x = 355,253,683.57
  5. Step 5: Solve for x
    x = 355,253,683.57/21,093.88
  6. Step 6: Final answer
    x = 16,841.55

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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.