Home / 21,406.96-29,542.92-11,976.16

Finding the Fourth Proportional to 21,406.96, 29,542.92 and 11,976.16

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Solution

The fourth proportional to 21,406.96, 29,542.92 and 11,976.16 is: 16,527.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,406.96 : 29,542.92 = 11,976.16 : x
  2. Step 2: Convert to fraction form
    21,406.96/29,542.92 = 11,976.16/x
  3. Step 3: Cross multiply
    21,406.96x = 29,542.92 × 11,976.16
  4. Step 4: Simplify right side
    21,406.96x = 353,810,736.79
  5. Step 5: Solve for x
    x = 353,810,736.79/21,406.96
  6. Step 6: Final answer
    x = 16,527.84

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.