Home / 21,677.56-29,917.82-12,725.84

Finding the Fourth Proportional to 21,677.56, 29,917.82 and 12,725.84

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Solution

The fourth proportional to 21,677.56, 29,917.82 and 12,725.84 is: 17,563.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,677.56 : 29,917.82 = 12,725.84 : x
  2. Step 2: Convert to fraction form
    21,677.56/29,917.82 = 12,725.84/x
  3. Step 3: Cross multiply
    21,677.56x = 29,917.82 × 12,725.84
  4. Step 4: Simplify right side
    21,677.56x = 380,729,497.08
  5. Step 5: Solve for x
    x = 380,729,497.08/21,677.56
  6. Step 6: Final answer
    x = 17,563.30

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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.