Home / 21,626.78-29,847.82-12,677.80

Finding the Fourth Proportional to 21,626.78, 29,847.82 and 12,677.80

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Solution

The fourth proportional to 21,626.78, 29,847.82 and 12,677.80 is: 17,497.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,626.78 : 29,847.82 = 12,677.80 : x
  2. Step 2: Convert to fraction form
    21,626.78/29,847.82 = 12,677.80/x
  3. Step 3: Cross multiply
    21,626.78x = 29,847.82 × 12,677.80
  4. Step 4: Simplify right side
    21,626.78x = 378,404,692.40
  5. Step 5: Solve for x
    x = 378,404,692.40/21,626.78
  6. Step 6: Final answer
    x = 17,497.04

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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.