Home / 21,114.45-29,135.38-12,164.85

Finding the Fourth Proportional to 21,114.45, 29,135.38 and 12,164.85

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Solution

The fourth proportional to 21,114.45, 29,135.38 and 12,164.85 is: 16,786.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,114.45 : 29,135.38 = 12,164.85 : x
  2. Step 2: Convert to fraction form
    21,114.45/29,135.38 = 12,164.85/x
  3. Step 3: Cross multiply
    21,114.45x = 29,135.38 × 12,164.85
  4. Step 4: Simplify right side
    21,114.45x = 354,427,527.39
  5. Step 5: Solve for x
    x = 354,427,527.39/21,114.45
  6. Step 6: Final answer
    x = 16,786.02

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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.