Home / 21,439.82-29,588.49-12,944.00

Finding the Fourth Proportional to 21,439.82, 29,588.49 and 12,944.00

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Solution

The fourth proportional to 21,439.82, 29,588.49 and 12,944.00 is: 17,863.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,439.82 : 29,588.49 = 12,944.00 : x
  2. Step 2: Convert to fraction form
    21,439.82/29,588.49 = 12,944.00/x
  3. Step 3: Cross multiply
    21,439.82x = 29,588.49 × 12,944.00
  4. Step 4: Simplify right side
    21,439.82x = 382,993,488.53
  5. Step 5: Solve for x
    x = 382,993,488.53/21,439.82
  6. Step 6: Final answer
    x = 17,863.65

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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.