Home / 21,136.94-29,169.89-11,705.50

Finding the Fourth Proportional to 21,136.94, 29,169.89 and 11,705.50

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Solution

The fourth proportional to 21,136.94, 29,169.89 and 11,705.50 is: 16,154.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,136.94 : 29,169.89 = 11,705.50 : x
  2. Step 2: Convert to fraction form
    21,136.94/29,169.89 = 11,705.50/x
  3. Step 3: Cross multiply
    21,136.94x = 29,169.89 × 11,705.50
  4. Step 4: Simplify right side
    21,136.94x = 341,448,147.40
  5. Step 5: Solve for x
    x = 341,448,147.40/21,136.94
  6. Step 6: Final answer
    x = 16,154.10

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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.