Home / 20,123.64-27,769.26-12,170.24

Finding the Fourth Proportional to 20,123.64, 27,769.26 and 12,170.24

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Solution

The fourth proportional to 20,123.64, 27,769.26 and 12,170.24 is: 16,794.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,123.64 : 27,769.26 = 12,170.24 : x
  2. Step 2: Convert to fraction form
    20,123.64/27,769.26 = 12,170.24/x
  3. Step 3: Cross multiply
    20,123.64x = 27,769.26 × 12,170.24
  4. Step 4: Simplify right side
    20,123.64x = 337,958,558.82
  5. Step 5: Solve for x
    x = 337,958,558.82/20,123.64
  6. Step 6: Final answer
    x = 16,794.11

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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.