Home / 21,114.42-29,140.92-12,161.04

Finding the Fourth Proportional to 21,114.42, 29,140.92 and 12,161.04

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Solution

The fourth proportional to 21,114.42, 29,140.92 and 12,161.04 is: 16,783.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,114.42 : 29,140.92 = 12,161.04 : x
  2. Step 2: Convert to fraction form
    21,114.42/29,140.92 = 12,161.04/x
  3. Step 3: Cross multiply
    21,114.42x = 29,140.92 × 12,161.04
  4. Step 4: Simplify right side
    21,114.42x = 354,383,893.76
  5. Step 5: Solve for x
    x = 354,383,893.76/21,114.42
  6. Step 6: Final answer
    x = 16,783.97

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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.