Home / 21,241.41-29,313.19-11,811.79

Finding the Fourth Proportional to 21,241.41, 29,313.19 and 11,811.79

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Solution

The fourth proportional to 21,241.41, 29,313.19 and 11,811.79 is: 16,300.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,241.41 : 29,313.19 = 11,811.79 : x
  2. Step 2: Convert to fraction form
    21,241.41/29,313.19 = 11,811.79/x
  3. Step 3: Cross multiply
    21,241.41x = 29,313.19 × 11,811.79
  4. Step 4: Simplify right side
    21,241.41x = 346,241,295.92
  5. Step 5: Solve for x
    x = 346,241,295.92/21,241.41
  6. Step 6: Final answer
    x = 16,300.30

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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.