Home / 20,153.05-27,813.48-12,199.66

Finding the Fourth Proportional to 20,153.05, 27,813.48 and 12,199.66

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Solution

The fourth proportional to 20,153.05, 27,813.48 and 12,199.66 is: 16,836.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,153.05 : 27,813.48 = 12,199.66 : x
  2. Step 2: Convert to fraction form
    20,153.05/27,813.48 = 12,199.66/x
  3. Step 3: Cross multiply
    20,153.05x = 27,813.48 × 12,199.66
  4. Step 4: Simplify right side
    20,153.05x = 339,315,040.59
  5. Step 5: Solve for x
    x = 339,315,040.59/20,153.05
  6. Step 6: Final answer
    x = 16,836.90

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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.