Home / 21,335.97-29,435.49-12,381.96

Finding the Fourth Proportional to 21,335.97, 29,435.49 and 12,381.96

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Solution

The fourth proportional to 21,335.97, 29,435.49 and 12,381.96 is: 17,082.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,335.97 : 29,435.49 = 12,381.96 : x
  2. Step 2: Convert to fraction form
    21,335.97/29,435.49 = 12,381.96/x
  3. Step 3: Cross multiply
    21,335.97x = 29,435.49 × 12,381.96
  4. Step 4: Simplify right side
    21,335.97x = 364,469,059.76
  5. Step 5: Solve for x
    x = 364,469,059.76/21,335.97
  6. Step 6: Final answer
    x = 17,082.38

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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.