Home / 21,166.95-29,203.83-12,213.30

Finding the Fourth Proportional to 21,166.95, 29,203.83 and 12,213.30

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Solution

The fourth proportional to 21,166.95, 29,203.83 and 12,213.30 is: 16,850.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,166.95 : 29,203.83 = 12,213.30 : x
  2. Step 2: Convert to fraction form
    21,166.95/29,203.83 = 12,213.30/x
  3. Step 3: Cross multiply
    21,166.95x = 29,203.83 × 12,213.30
  4. Step 4: Simplify right side
    21,166.95x = 356,675,136.94
  5. Step 5: Solve for x
    x = 356,675,136.94/21,166.95
  6. Step 6: Final answer
    x = 16,850.57

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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.