Home / 21,646.82-29,872.62-12,216.26

Finding the Fourth Proportional to 21,646.82, 29,872.62 and 12,216.26

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Solution

The fourth proportional to 21,646.82, 29,872.62 and 12,216.26 is: 16,858.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,646.82 : 29,872.62 = 12,216.26 : x
  2. Step 2: Convert to fraction form
    21,646.82/29,872.62 = 12,216.26/x
  3. Step 3: Cross multiply
    21,646.82x = 29,872.62 × 12,216.26
  4. Step 4: Simplify right side
    21,646.82x = 364,931,692.80
  5. Step 5: Solve for x
    x = 364,931,692.80/21,646.82
  6. Step 6: Final answer
    x = 16,858.44

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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.