Home / 21,644.73-29,869.49-12,213.09

Finding the Fourth Proportional to 21,644.73, 29,869.49 and 12,213.09

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Solution

The fourth proportional to 21,644.73, 29,869.49 and 12,213.09 is: 16,853.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,644.73 : 29,869.49 = 12,213.09 : x
  2. Step 2: Convert to fraction form
    21,644.73/29,869.49 = 12,213.09/x
  3. Step 3: Cross multiply
    21,644.73x = 29,869.49 × 12,213.09
  4. Step 4: Simplify right side
    21,644.73x = 364,798,800.16
  5. Step 5: Solve for x
    x = 364,798,800.16/21,644.73
  6. Step 6: Final answer
    x = 16,853.93

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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.