Home / 12,383.40-18,576.70-3,618.16

Finding the Fourth Proportional to 12,383.40, 18,576.70 and 3,618.16

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Solution

The fourth proportional to 12,383.40, 18,576.70 and 3,618.16 is: 5,427.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,383.40 : 18,576.70 = 3,618.16 : x
  2. Step 2: Convert to fraction form
    12,383.40/18,576.70 = 3,618.16/x
  3. Step 3: Cross multiply
    12,383.40x = 18,576.70 × 3,618.16
  4. Step 4: Simplify right side
    12,383.40x = 67,213,472.87
  5. Step 5: Solve for x
    x = 67,213,472.87/12,383.40
  6. Step 6: Final answer
    x = 5,427.71

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.