Home / 20,151.37-27,811.45-12,193.66

Finding the Fourth Proportional to 20,151.37, 27,811.45 and 12,193.66

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Solution

The fourth proportional to 20,151.37, 27,811.45 and 12,193.66 is: 16,828.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,151.37 : 27,811.45 = 12,193.66 : x
  2. Step 2: Convert to fraction form
    20,151.37/27,811.45 = 12,193.66/x
  3. Step 3: Cross multiply
    20,151.37x = 27,811.45 × 12,193.66
  4. Step 4: Simplify right side
    20,151.37x = 339,123,365.41
  5. Step 5: Solve for x
    x = 339,123,365.41/20,151.37
  6. Step 6: Final answer
    x = 16,828.80

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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.