Home / 21,087.54-31,611.87-10,696.86

Finding the Fourth Proportional to 21,087.54, 31,611.87 and 10,696.86

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Solution

The fourth proportional to 21,087.54, 31,611.87 and 10,696.86 is: 16,035.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,087.54 : 31,611.87 = 10,696.86 : x
  2. Step 2: Convert to fraction form
    21,087.54/31,611.87 = 10,696.86/x
  3. Step 3: Cross multiply
    21,087.54x = 31,611.87 × 10,696.86
  4. Step 4: Simplify right side
    21,087.54x = 338,147,747.73
  5. Step 5: Solve for x
    x = 338,147,747.73/21,087.54
  6. Step 6: Final answer
    x = 16,035.43

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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.