Home / 21,209.56-29,268.74-11,777.96

Finding the Fourth Proportional to 21,209.56, 29,268.74 and 11,777.96

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Solution

The fourth proportional to 21,209.56, 29,268.74 and 11,777.96 is: 16,253.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,209.56 : 29,268.74 = 11,777.96 : x
  2. Step 2: Convert to fraction form
    21,209.56/29,268.74 = 11,777.96/x
  3. Step 3: Cross multiply
    21,209.56x = 29,268.74 × 11,777.96
  4. Step 4: Simplify right side
    21,209.56x = 344,726,048.97
  5. Step 5: Solve for x
    x = 344,726,048.97/21,209.56
  6. Step 6: Final answer
    x = 16,253.33

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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.