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Finding the Fourth Proportional to 21,593.88, 29,807.01 and 12,644.26

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Solution

The fourth proportional to 21,593.88, 29,807.01 and 12,644.26 is: 17,453.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,593.88 : 29,807.01 = 12,644.26 : x
  2. Step 2: Convert to fraction form
    21,593.88/29,807.01 = 12,644.26/x
  3. Step 3: Cross multiply
    21,593.88x = 29,807.01 × 12,644.26
  4. Step 4: Simplify right side
    21,593.88x = 376,887,584.26
  5. Step 5: Solve for x
    x = 376,887,584.26/21,593.88
  6. Step 6: Final answer
    x = 17,453.44

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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.