Home / 21,086.12-31,647.36-11,735.48

Finding the Fourth Proportional to 21,086.12, 31,647.36 and 11,735.48

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Solution

The fourth proportional to 21,086.12, 31,647.36 and 11,735.48 is: 17,613.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,086.12 : 31,647.36 = 11,735.48 : x
  2. Step 2: Convert to fraction form
    21,086.12/31,647.36 = 11,735.48/x
  3. Step 3: Cross multiply
    21,086.12x = 31,647.36 × 11,735.48
  4. Step 4: Simplify right side
    21,086.12x = 371,396,960.33
  5. Step 5: Solve for x
    x = 371,396,960.33/21,086.12
  6. Step 6: Final answer
    x = 17,613.34

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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.