Home / 21,439.80-29,588.49-12,944.01

Finding the Fourth Proportional to 21,439.80, 29,588.49 and 12,944.01

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Solution

The fourth proportional to 21,439.80, 29,588.49 and 12,944.01 is: 17,863.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,439.80 : 29,588.49 = 12,944.01 : x
  2. Step 2: Convert to fraction form
    21,439.80/29,588.49 = 12,944.01/x
  3. Step 3: Cross multiply
    21,439.80x = 29,588.49 × 12,944.01
  4. Step 4: Simplify right side
    21,439.80x = 382,993,710.44
  5. Step 5: Solve for x
    x = 382,993,710.44/21,439.80
  6. Step 6: Final answer
    x = 17,863.68

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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.