Home / 21,213.14-29,267.55-12,257.38

Finding the Fourth Proportional to 21,213.14, 29,267.55 and 12,257.38

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Solution

The fourth proportional to 21,213.14, 29,267.55 and 12,257.38 is: 16,911.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,213.14 : 29,267.55 = 12,257.38 : x
  2. Step 2: Convert to fraction form
    21,213.14/29,267.55 = 12,257.38/x
  3. Step 3: Cross multiply
    21,213.14x = 29,267.55 × 12,257.38
  4. Step 4: Simplify right side
    21,213.14x = 358,743,408.85
  5. Step 5: Solve for x
    x = 358,743,408.85/21,213.14
  6. Step 6: Final answer
    x = 16,911.38

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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.