Home / 21,136.93-29,168.91-12,184.38

Finding the Fourth Proportional to 21,136.93, 29,168.91 and 12,184.38

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Solution

The fourth proportional to 21,136.93, 29,168.91 and 12,184.38 is: 16,814.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,136.93 : 29,168.91 = 12,184.38 : x
  2. Step 2: Convert to fraction form
    21,136.93/29,168.91 = 12,184.38/x
  3. Step 3: Cross multiply
    21,136.93x = 29,168.91 × 12,184.38
  4. Step 4: Simplify right side
    21,136.93x = 355,405,083.63
  5. Step 5: Solve for x
    x = 355,405,083.63/21,136.93
  6. Step 6: Final answer
    x = 16,814.41

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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.