Home / 21,698.62-29,942.89-12,136.66

Finding the Fourth Proportional to 21,698.62, 29,942.89 and 12,136.66

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Solution

The fourth proportional to 21,698.62, 29,942.89 and 12,136.66 is: 16,747.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,698.62 : 29,942.89 = 12,136.66 : x
  2. Step 2: Convert to fraction form
    21,698.62/29,942.89 = 12,136.66/x
  3. Step 3: Cross multiply
    21,698.62x = 29,942.89 × 12,136.66
  4. Step 4: Simplify right side
    21,698.62x = 363,406,464.95
  5. Step 5: Solve for x
    x = 363,406,464.95/21,698.62
  6. Step 6: Final answer
    x = 16,747.91

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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.