Home / 21,147.70-31,698.66-13,757.44

Finding the Fourth Proportional to 21,147.70, 31,698.66 and 13,757.44

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Solution

The fourth proportional to 21,147.70, 31,698.66 and 13,757.44 is: 20,621.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,147.70 : 31,698.66 = 13,757.44 : x
  2. Step 2: Convert to fraction form
    21,147.70/31,698.66 = 13,757.44/x
  3. Step 3: Cross multiply
    21,147.70x = 31,698.66 × 13,757.44
  4. Step 4: Simplify right side
    21,147.70x = 436,092,413.03
  5. Step 5: Solve for x
    x = 436,092,413.03/21,147.70
  6. Step 6: Final answer
    x = 20,621.27

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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.