Home / 21,625.28-29,845.75-12,676.30

Finding the Fourth Proportional to 21,625.28, 29,845.75 and 12,676.30

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Solution

The fourth proportional to 21,625.28, 29,845.75 and 12,676.30 is: 17,494.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,625.28 : 29,845.75 = 12,676.30 : x
  2. Step 2: Convert to fraction form
    21,625.28/29,845.75 = 12,676.30/x
  3. Step 3: Cross multiply
    21,625.28x = 29,845.75 × 12,676.30
  4. Step 4: Simplify right side
    21,625.28x = 378,333,680.73
  5. Step 5: Solve for x
    x = 378,333,680.73/21,625.28
  6. Step 6: Final answer
    x = 17,494.97

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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.