Home / 21,136.05-29,168.10-12,182.04

Finding the Fourth Proportional to 21,136.05, 29,168.10 and 12,182.04

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Solution

The fourth proportional to 21,136.05, 29,168.10 and 12,182.04 is: 16,811.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,136.05 : 29,168.10 = 12,182.04 : x
  2. Step 2: Convert to fraction form
    21,136.05/29,168.10 = 12,182.04/x
  3. Step 3: Cross multiply
    21,136.05x = 29,168.10 × 12,182.04
  4. Step 4: Simplify right side
    21,136.05x = 355,326,960.92
  5. Step 5: Solve for x
    x = 355,326,960.92/21,136.05
  6. Step 6: Final answer
    x = 16,811.42

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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.