Home / 21,685.14-29,914.43-14,144.09

Finding the Fourth Proportional to 21,685.14, 29,914.43 and 14,144.09

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Solution

The fourth proportional to 21,685.14, 29,914.43 and 14,144.09 is: 19,511.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,685.14 : 29,914.43 = 14,144.09 : x
  2. Step 2: Convert to fraction form
    21,685.14/29,914.43 = 14,144.09/x
  3. Step 3: Cross multiply
    21,685.14x = 29,914.43 × 14,144.09
  4. Step 4: Simplify right side
    21,685.14x = 423,112,169.93
  5. Step 5: Solve for x
    x = 423,112,169.93/21,685.14
  6. Step 6: Final answer
    x = 19,511.62

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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.